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power detectors - s m t 11 11 - 1 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz general descriptions features functional diagram t he hm c 1021lp4 e is an r m s power detector with an integrated high bandwidth envelope detector. t he r m s output is a temperature compensated, monoton - ic, linear-in-db representation of real r f signal power, measured over an input sensing range of 70 db. t he envelope detector provides an accurate voltage output which is linearly proportional to the envelope ampli - tude of the r f input signal for modulation bandwidths up to 150 mhz. t he high bandwidth envelope detec - tion of the hm c 1021lp4 e makes it ideal for detecting broadband and high crest factor r f signals commonly used in c dma2000, wc dma, and l te systems. ad - ditionally, the instantaneous envelope output can be used to create fast, excessive r f power protection, pa linearization, and efficiency enhancing envelope- tracking pa implementations. t he hm c 1021lp4 e s r m s detector integration band - width is digitally programmable via input pins sc i1-4 over a range of more than 4 decades. t his allows the user to dynamically set the operation bandwidth and also permits the detection of different types of modula - tions on the same platform. t he hm c 1021lp4 e features an internal op-amp at the r m s output stage, which accommodates slope and intercept adjustments and supports a wide range of applications. broadband s ingle- e nded r f input r m s detector with 1 db detection accuracy to 3.9 ghz input dynamic r ange: -62 dbm to +8 dbm 1 db e nvelope detection accuracy over 20 db input r ange e nvelope detection bandwidth > 150mhz digitally programmable integration bandwidth power-down mode 24 lead 4x4mm s m t package: 16mm2 typical applications t he hm c 1021lp4 e is ideal for: ? log C> root-mean-square (rms) conversion ? tx/rx signal strength indication (tssi/rssi) ? rf power amplifer efficiency control ? receiver automatic gain control ? transmitter power control ? envelope tracking ? pa linearization electrical specifcations i t a = +25 c, vcc = 5v, sci4 = sci1 = 0v, sci3 = sci2 = 5v, unless otherwise noted parameter t yp. t yp. t yp. t yp. t yp. t yp. t yp. units dynamic range (1db error) [1] input frequency 100 900 1900 2200 2700 3500 3900 mhz r m so u t o utput 71 71 70 69 68 64 60 db eto u t o utput 18 19 20 19 20 19 19 db deviation vs temperature: (over full temperature range -40 c to 85 c). deviation is measured from reference, which is the same wcdma input at 25 c. 1 db [1] with wcdma 4 carrier (tm1-64 dpch)
p ower d etectors - s m t 11 11 - 2 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz electrical specifcations ii t a = +25 c, vcc = 5v, sci4 = sci1 = 0v, sci3 = sci2 = 5v, unless otherwise noted rmsout vs. pin with different modulations @ 1900 mhz [1] rmsout error vs. pin with different modulations @ 1900 mhz [1] [1] data was taken at s ci4= s ci1=0v, s ci3= s ci2=5v, shortest integration time is for sc i=0000, allowed longest integration time is for sc i=1100 parameter t yp. t yp. t yp. t yp. t yp. t yp. t yp. units input frequency 100 900 1900 2200 2700 3500 3900 mhz modulation deviation (output deviation from reference, which is measured with cw input at equivalent input signal power) wcdma 4 carrier (tm1-64 dpch) at +25 c 0.1 0.1 0.1 0.1 0.1 0.1 0.1 db wcdma 4 carrier (tm1-64 dpch) at +85 c 0.1 0.1 0.1 0.1 0.1 0.1 0.1 db wcdma 4 carrier (tm1-64 dpch) at -40 c 0.1 0.1 0.1 0.1 0.1 0.1 0.1 db rmsout logarithmic slope and intercept [1] logarithmic s lope 33.6 33.7 3 4.1 34.5 35.4 37. 8 39.7 mv/db logarithmic intercept -69.4 -69.2 -68.4 - 67. 8 -66.2 -62.2 -59.3 dbm max. input power at 1db e rror 8 8 8 8 8 7 5 dbm min. input power at 1db e rror -63 -63 -62 -61 -60 -57 -55 dbm etout linear slope and intercept linear s lope 16.6 16.0 14.8 14.5 13.6 12.3 11.3 v/v linear intercept -56.0 -58.2 -63.0 -64.0 -68.0 -75.3 -81.8 mv max. input power at 1db e rror -14 -13 -11 -11 -10 -10 -9 dbm min. input power at 1db e rror -32 -32 -31 -30 -30 -29 -28 dbm [1] with wcdma 4 carrier (tm1-64 dpch) 0 0.5 1 1.5 2 2.5 3 -70 -60 -50 -40 -30 -20 -10 0 10 ideal cw wcdma 4 carriers wcdma1 cdma2000 ltedw rmsout (v) input power (dbm) -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 cw wcdma 4 carriers wcdma1 cdma2000 ltedw error (db) input power (dbm)
power detectors - s m t 11 11 - 3 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz electrical specifcations iii t a = +25 c, vcc = 5v, sci4 = sci1 = 0v, sci3 = sci2 = 5v, unless otherwise noted parameter c onditions min t yp. max units single-ended input confguration input network r eturn loss up to 3.9 ghz > 15 db input r esistance between inp and inn between pins 3 and 4 100 ? input voltage r ange a c c oupled peak voltage at inp - 0.85 v rmsout output o utput voltage r ange 0.13 to 2.7 v source/sink current compliance rmsout held at vcc/2 8 / -0.55 ma output slew rate (rise / fall) s ci4= s ci3= s ci2= s ci1=0v, c ofs=1nf 24 / 1.9 10 6 v/s etout output modulation bandwidth 150 mhz o utput voltage r ange 1.2 to 2.2 v source/sink current compliance 8 / -3.7 ma output slew rate (rise / fall) 28 / 27 10 6 v/s vset input (negative feedback terminal) input voltage r ange for control applications with nominal slope/intercept settings 0.13 to 2.7 v input r esistance 5 m? sci1-4 inputs, enx logic input (power down control) input high voltage 0.7xv cc v input low voltage 0.3xv cc v input high c urrent 1 a input low c urrent 1 a input c apacitance 0.5 pf power supply s upply voltage 4.5 5 5.5 v s upply c urrent with no input power 75 ma s upply c urrent with -20 dbm 78 ma s tandby mode s upply c urrent 5 ma
p ower d etectors - s m t 11 11 - 4 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz rmsout & error vs. pin @ 100 mhz [1][2] rmsout & error vs. pin @ 1900 mhz [1][2] rmsout & error vs. pin @ 900 mhz [1][2] rmsout & error vs. pin @ 2200 mhz [1][2] rmsout & error vs. pin @ 2700 mhz [1][2] rmsout & error vs. pin @ 3500 mhz [1][2] [1] data was taken at s ci4= s ci1=0v, s ci3= s ci2=5v, shortest integration time is for sc i=0000, allowed longest integration time is for sc i=1100 [2] wc dma 4 carriers input waveform 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 err +25c err +85c err -40c ideal logout +25c logout +85c logout -40c rmsout (v) error (db) input power (dbm) 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 err +25c err +85c err -40c ideal logout +25c logout +85c logout -40c rmsout (v) error (db) input power (dbm) 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 err +25c err +85c err -40c ideal logout +25c logout +85c logout -40c rmsout (v) error (db) input power (dbm) 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 err +25c err +85c err -40c ideal logout +25c logout +85c logout -40c rmsout (v) error (db) input power (dbm) 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 err +25c err +85c err -40c ideal logout +25c logout +85c logout -40c rmsout (v) error (db) input power (dbm) 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 err +25c err +85c err -40c ideal logout +25c logout +85c logout -40c rmsout (v) error (db) input power (dbm)
power detectors - s m t 11 11 - 5 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz rmsout intercept vs. frequency [1][2] rmsout & error vs. pin @ 3900 mhz [1][2] rmsout slope vs. frequency [1][2] rmsout vs. pin with wcdma 4 carrier @ +25 c [1] rmsout error vs. pin with wcdma 4 carrier @ +25 c [1] rmsout error vs. pin with wcdma 4 carrier @ +85 c wrt +25 c response [1] [1] data was taken at s ci4= s ci1=0v, s ci3= s ci2=5v, shortest integration time is for sc i=0000, allowed longest integration time is for sc i=1100 [2] wc dma 4 carriers input waveform 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 err +25c err +85c err -40c ideal logout +25c logout +85c logout -40c rmsout (v) error (db) input power (dbm) 0 0.5 1 1.5 2 2.5 3 -70 -60 -50 -40 -30 -20 -10 0 10 100mhz 900mhz 1900mhz 2200mhz 2700mhz 3500mhz 3900mhz input power (dbm) rmsout (v) -80 -75 -70 -65 -60 -55 -50 0 1000 2000 3000 4000 +25c +85c -40c frequency (mhz) intercept (dbm) 30 35 40 45 50 0 1000 2000 3000 4000 +25c +85c -40c frequency (mhz) slope (mv/db) -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 100mhz 900mhz 1900mhz 2200mhz 2700mhz 3500mhz 3900mhz input power (dbm) error (db) -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 100mhz 900mhz 1900mhz 2200mhz 2700mhz 3500mhz 3900mhz input power (dbm) error (db)
p ower d etectors - s m t 11 11 - 6 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz rmsout error vs. pin with wcdma 4 carrier @ -40 c wrt +25 c response [1] rmsout vs. pin with cw @ +25 c [1] rmsout error vs. pin with cw @ +25 c [1] rmsout vs. pin w/ cw & wcdma 4 carrier @ 1900 mhz & +25 c [1] reading error for wcdma 4 carrier wrt cw response @ +25 c [1] rmsout vs. pin w/ cw & wcdma 4 carrier @ 1900 mhz & +85 c [1] [1] data was taken at s ci4= s ci1=0v, s ci3= s ci2=5v, shortest integration time is for sc i=0000, allowed longest integration time is for sc i=1100 0 0.5 1 1.5 2 2.5 3 -70 -60 -50 -40 -30 -20 -10 0 10 100mhz 900mhz 1900mhz 2200mhz 2700mhz 3500mhz 3900mhz input power (dbm) rmsout (v) 0 0.5 1 1.5 2 2.5 3 -70 -60 -50 -40 -30 -20 -10 0 10 cw wcdma input power (dbm) rmsout (v) -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 -70 -60 -50 -40 -30 -20 -10 0 10 100mhz 900mhz 1900mhz 2200mhz 2700mhz 3500mhz 3900mhz input power (dbm) error (db) 0 0.5 1 1.5 2 2.5 3 -70 -60 -50 -40 -30 -20 -10 0 10 cw wcdma input power (dbm) rmsout (v) -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 100mhz 900mhz 1900mhz 2200mhz 2700mhz 3500mhz 3900mhz input power (dbm) error (db) -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 100mhz 900mhz 1900mhz 2200mhz 2700mhz 3500mhz 3900mhz input power (dbm) error (db)
power detectors - s m t 11 11 - 7 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz reading error for wcdma 4 carrier wrt cw response @ -40 c [1] reading error for wcdma 4 carrier wrt cw response @ +85 c [1] rmsout output response with sci = 0000 @ 1900 mhz rmsout vs. pin w/ cw & wcdma 4 carrier @ 1900 mhz & -40 c [1] rmsout output response with sci = 1100 @ 1900 mhz typical supply current vs. pin, vcc = 5v [1] data was taken at s ci4= s ci1=0v, s ci3= s ci2=5v, shortest integration time is for sc i=0000, allowed longest integration time is for sc i=1100 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 -70 -60 -50 -40 -30 -20 -10 0 10 100mhz 900mhz 1900mhz 2200mhz 2700mhz 3500mhz 3900mhz input power (dbm) error (db) 0 0.5 1 1.5 2 2.5 3 -70 -60 -50 -40 -30 -20 -10 0 10 cw wcdma input power (dbm) rmsout (v) -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 -70 -60 -50 -40 -30 -20 -10 0 10 100mhz 900mhz 1900mhz 2200mhz 2700mhz 3500mhz 3900mhz input power (dbm) error (db) 0 0.5 1 1.5 2 2.5 3 -5 0 5 10 15 20 25 -20246810 -20 dbm 0 dbm rmsout (v) rf enable voltage (v) time (us) msout rf enable rf on rf off rf off 0 0.5 1 1.5 2 2.5 3 -5 0 5 10 15 20 25 012345678910 -20 dbm 0 dbm rmsout (v) rf enable voltage (v) time (ms) rmsout rf enable rf on rf off rf off 50 55 60 65 70 75 80 85 90 95 100 -70 -60 -50 -40 -30 -20 -10 0 10 +25c +85c -40c input power (dbm) supply current (ma)
p ower d etectors - s m t 11 11 - 8 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz input return loss vs. frequency -30 -25 -20 -15 -10 -5 0 0123456 frequency (ghz) return loss (db) etout vs. pin with cw @ 900 mhz etout & etout error vs. pin with cw @ 900 mhz etout vs. pin with cw @ 1900 mhz etout & etout error vs. pin with cw @ 1900 mhz 0.5 1 1.5 2 2.5 0 0.05 0.1 0.15 0.2 +25c +85c -40c input voltage (vp-p) etout (v) 0.001 0.01 0.1 1 10 -4 -2 0 2 4 -40 -35 -30 -25 -20 -15 -10 -5 error +25c error +85c error -40c +25c +85c -40c normalized etout (v) error (db) input power (dbm) 0.5 1 1.5 2 2.5 0 0.05 0.1 0.15 0.2 +25c +85c -40c input voltage (vp-p) etout (v) 0.001 0.01 0.1 1 10 -4 -2 0 2 4 -40 -35 -30 -25 -20 -15 -10 -5 error +25c error +85c error -40c +25c +85c -40c normalized etout (v) error (db) input power (dbm) output ripple & rise/fall time vs. integration setting [sci4,sci3,sci2,sci1] in decimal 0 300 600 900 1200 1500 1800 0.1 1 10 100 1000 10000 100000 0123456789101112 rise time fall time ripple with wcdma1 ripple with wcdma4 ripple with 8 tone (1khz seperation) ripple with 8 tone (10khz seperation) output ripple peak-peak (mv) rise time & fall time (us) integration setting (in decimal)
power detectors - s m t 11 11 - 9 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz etout vs. pin with cw @ 3500 mhz etout & etout error vs. pin with cw @ 3500 mhz etout intercept vs. frequency with cw etout slope vs. frequency with cw 0.5 1 1.5 2 2.5 0 0.05 0.1 0.15 0.2 +25c +85c -40c input voltage (vp-p) etout (v) 0.001 0.01 0.1 1 10 -4 -2 0 2 4 -40 -35 -30 -25 -20 -15 -10 -5 error +25c error +85c error -40c +25c +85c -40c normalized etout (v) error (db) input power (dbm) -90 -85 -80 -75 -70 -65 -60 -55 -50 0 1000 2000 3000 4000 +25c +85c -40c frequency (mhz) intercept (mv) 10 12 14 16 18 20 0 1000 2000 3000 4000 +25c +85c -40c frequency (mhz) slope (v/v)
p ower d etectors - s m t 11 11 - 10 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz outline drawing n otes : 1. l e adf r am e ma ter ial: co pp er all o y 2. dim e n s i o n s a re in in c h es [millim eters ]. 3. l e ad s pa c ing to l er an ce i s n o n- c umula t iv e 4. pad bu rr l e ng t h s hall b e 0.15mm maximum. pad bu rr h e igh t s hall b e 0.05mm maximum. 5. pa c kag e w a r p s hall n ot e x cee d 0.05mm. 6. all g ro und l e ad s and g ro und paddl e mu st b e so ld ere d to p c b r f g ro und. 7. re f er to hm c appli c a t i o n n ote f or s ugg este d p c b land pa tter n. package information absolute maximum ratings power supply voltage (vcc) 5.6v r f input power 10 dbm input voltage v cc + 0.6v junction t emperature 125 c continuous pdiss (t = 85 c) (derate 32.45 mw/ c above 85 c) 1.39 w thermal resistance (r th ) (junction to ground paddle) 28.68 c/w s torage t emperature -65 to +150 c o perating t emperature -40 to +85 c esd sensitivity (hbm) c lass 1b e l ectrost a t ic se n s i t iv e de vi ce o b ser v e handling p rec au t io n s part number package body material lead finish m s l r ating package marking [1] hm c 1021lp4 e r oh s -compliant low s tress injection molded plastic 100% matte s n m s l1 [2] h1021 xxxx [1] 4-digit lot number xxxx [2] max peak refow temperature of 260 c
power detectors - s m t 11 11 - 11 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz pin descriptions pin number function description interface s chematic 1, 16, 21, 23 vcc bias s upply. c onnect supply voltage to these pins with appropriate fltering. 2, 5, 8, 11, 12, 13, 22, 24 gnd package bottom has an exposed metal paddle that must be connected to rf/dc ground. 3 ,4 inp, inn r f input pins 6 eto u t linear output that provides an indication of envelope of the input signal.
p ower d etectors - s m t 11 11 - 12 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz pin number function description interface s chematic 7 e nx disable pin. c onnect to gnd for normal operation. applying voltage v>0.8xvcc will initiate power saving mode. 9, 10 co fs a, cof s b input high pass flter capacitor. connect a capacitor between co fs a and co fs b to determine 3 db point of input signal high-pass flter. 14 v set s et input point for controller mode. 15 r m so u t logarithmic output that provides an indication of mean square input power. 17, 18, 19, 20 sc i1, sc i2, sc i3, sc i4 digital input pins that control the internal integration time constant for mean square calculation. sci4 is the most signifcant bit. set v>0.2xvcc to disable. s hortest integration time is for sc i=0000, allowed longest integration time is for sci=1100 (1101, 1110 and 1111 sci settings are forbidden states). each step changes the integration time by 1 octave. pin descriptions (continued)
power detectors - s m t 11 11 - 13 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz evaluation pcb t he circuit board used in the application should use rf circuit design techniques. signal lines sho- uld have 50 ohm impedance while the package ground leads and exposed paddle should be con - nected directly to the ground plane similar to that shown. a sufficient number of via holes should be used to connect the top and bottom ground planes. t he evaluation circuit board shown is available from hittite upon request. board is confgured with wideband single-ended input interface suitable for input signal frequencies above 100 mhz. r efer to wideband single-ended input interface section in application information for operating with signals below 100 mhz. list of materials for evaluation pcb 131352 [1] item description j1, j2 s ma c onnector t p1 - t p9 d c pin c 1, c 10, c 16 100 pf c apacitor, 0402 pkg. c 2, c 5, c 11, c 17 100 nf c apacitor, 0402 pkg. c 3, c 4, c 6 1000 pf c apacitor, 0402 pkg. r 2, r 13 - r 15, r 17 10k o hm r esistor, 0402 pkg. r 3, r 9, r 10, r 12 0 o hm r esistor, 0402 pkg. r5 49.9 o hm r esistor, 0402 pkg. r 6, r 7 4.7k o hm r esistor, 0402 pkg. u1 hm c 1021lp4 e r m s power detector pc b [2] 131349-1 e valuation p c b [1] r eference this number when ordering complete evaluation p c b [2] c ircuit board material: r ogers 4350 or arlon 25f r
p ower d etectors - s m t 11 11 - 14 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz application circuit
power detectors - s m t 11 11 - 15 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz t he hm c 1021lp4 e combines an r m s detector core with an e nvelope detector in a single package which is capable of extracting envelope information of the modulated r f signal with modulation bandwidths in excess of 100 mhz. t he extracted envelope information is independent of the average power and the crest factor of the r f signal. t he r m s detector core provides a linear-in-db output of the average r f power, whereas the envelope detector core provides a linear representation of the instantaneous envelope waveform. t he instantaneous envelope output eto u t may be used in ultra-fast excessive rf power protection systems, pa linearization techniques and in efficiency enhancing e nvelope- t racking pa implementations. t he hm c 1021lp4 e s r m s detector core is designed to measure the actual r m s power of the input signal, independent of the modulated signal waveform complexity or modulation scheme. t he r m s detector core architecture of HMC1021LP4E is composed of a full-wave rectifer, log/antilog circuit, and an integrator as shown above. the r m so u t signal is directly proportional to the logarithm of the time-average of v in 2 . t he bias block also contains temperature compensation circuits which stabilize output accuracy over the entire operating temperature range. t he d c offset cancellation circuit actively cancels internal offsets so that even very small input signal levels can be measured accurately. t he hm c 1021lp4 e achieves exceptional r f power measurement accuracy independent of the modulation of the carrier with the system architecture shown in the block diagram fgure. the relation between the HMC1021LP4Es r m so u t output and the r f input power is given below: confguration for the typical application t he hm c 1021lp4 e is a logarithmic r m s detector that can be directly driven with a single-ended 50- o hm r f source. the integrated broadband single-ended input interface of HMC1021LP4E eliminates the requirement for an external balun transformer or matching network. t he hm c 1021lp4 e can be operated from d c to 3.9 ghz by using only standard d c blocking capacitors. t his simple input interface provides cost and p c b area reductions and increases measurement repeatability. application information principle of operation p in = rmsout / [log-slope] + [log-intercept], dbm
p ower d etectors - s m t 11 11 - 16 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz t he r m s output signal is typically connected to v set through a resistive network providing a pin -> r m so u t transfer characteristic slope of 33.7 mv/dbm ( at 900 mhz). however the rms output can be re-scaled to magnify a specifc portion of the input sensing range, and to fully utilize the dynamic range of the rms output. refer to the section under the log-slope and intercept section for details. due to part-to-part variations in log-slope and log-intercept, a system-level calibration is recommended to satisfy absolute accuracy requirements; refer to the system calibration section for more details. broadband single-ended input interface t he hm c 1021lp4 e operates with a single-ended input inter- face and requires only two external dc blocking capacitors and an external 50 o hm resistor. t he hm c 1021lp4 e input interface shown below provides a compact, broadband solution. note that the provided single-ended input interface covers the whole operating spectrum of the hm c 1021lp4 e and does not require matching/tuning for different frequencies. the performance of the HMC1021LP4E at different frequencies is shown below: rmsout & error vs. pin 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 -4 -3 -2 -1 0 1 2 3 4 -70 -60 -50 -40 -30 -20 -10 0 10 err 100mhz err 900mhz err 1900mhz err 2200mhz err 2700mhz err 3500mhz err 3900mhz logout 100mhz logout 900mhz logout 1900mhz logout 2200mhz logout 2700mhz logout 3500mhz logout 3900mhz rmsout (v) error (db) input power (dbm)
power detectors - s m t 11 11 - 17 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz etout response to an rf input signal with a 100 mhz modulation bandwidth envelope detector output t he hm c 1021lp4 e s eto u t output provides a linearly scaled replica of the instantaneous envelope of the mod- ulated r f signal for modulation bandwidths up to 150 mhz. for optimum performance, the eto u t pin of the hm c 1021lp4 e should be terminated with a 560 ? load resistor to gnd. note that any capacitive loading on the eto u t pin would reduce the modulation bandwidth of the envelope detection. t he envelope output has a conversion gain of 11.5v/v with an output voltage ranging from 1.2v to 2.2v. -3 -2 -1 0 1 2 3 0 50 100 150 200 no cap 1.5 pf modulation bandwidth (mhz) normalized vet (db) t he waveform below shows the hm c 1021lp4 e s envelope detector response to an r f input signal with a 100 mhz modulation bandwidth. etout bandwidth
p ower d etectors - s m t 11 11 - 18 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz rms output interface and transient response the HMC1021LP4E features digital input pins (sci1-sci4) that control the internal integration time constant. output transient response is determined by the digital integration controls, and output load conditions. shortest integration time is for sci=0000, allowed longest integration time is for sci=1100 (1101, 1110 and 1111 sci settings are forbidden states). using larger values of sc i will narrow the operating bandwidth of the integrator, resulting in a longer averaging time interval and a more fltered output signal. it will also slow the power detectors transient response. a larger sc i value favors output accuracy over speed. for the fastest possible transient settling times set sc i to 0000. t his confguration will operate the integrator at its widest possible bandwidth, resulting in short averaging time-interval and an output signal with little fltering. for most applications an sci setting may be selected to maintain a balance between speed and accuracy. furthermore, error performance over modulation bandwidth is dependent on the sc i setting. for example modulations with relatively low frequency components and high crest factors may require higher sci (integration) settings. table 1: transient response vs. sci setting [1] : rmsout rise-time 10% -> 90% (s) [3] rmsout rise settling time (s) [2] rmsout fall-time 100% -> 10% (s) [4] sc i4,3, 2,1 pin = 0 dbm pin = -20 dbm pin = -40 dbm pin = 0 dbm pin = -20 dbm pin = -40 dbm pin = 0 dbm pin = -20 dbm pin = -40 dbm 0000 0.0626 0.042 0.0346 0.425 0.529 0.5806 0.9484 0.9694 0.9008 0010 0.0668 0.0444 0.078 0.4736 0.5476 0.5348 2.9932 3.12 3.0216 0100 0.072 0.064 0.648 11.74 8 11. 25 4 10.89 12.252 12.094 12.786 0110 0.096 1.848 2.976 36.904 34.448 33.552 48.176 49.112 51.96 1000 5.16 9.18 9.72 130.76 119. 2 114.78 194.12 199.64 201.2 1010 16.4 35.8 51.2 628.4 515.1 515.8 780.1 800 833.6 110 0 81.41 123.637 229.2 2469.2 2102.801 2214 3198.8 3301.6 3358.801
power detectors - s m t 11 11 - 19 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 -100 -80 -60 -40 -20 0 20 40 60 80 100 0 50 100 150 200 250 300 350 400 450 500 sci = 0000 sci = 0100 rmsout (v) rf input voltage (mv) time (us) rf input rmsout residual ripple for 900 mhz wimax @ sci=0100 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 -100 -80 -60 -40 -20 0 20 40 60 80 100 0 50 100 150 200 250 300 350 400 450 500 sci = 0000 sci = 0101 rmsout (v) rf input voltage (mv) time (us) rf input rmsout residual ripple for 900 mhz wimax @ sci=0101 [1] input signal is 1900 mhz cw -tone switched on and off [2] measured from 10% to 90% [3] measured from rf switching edge to 1db (input referred) settling of rmsout. [4] measured from 100% to 10% 0.01 0.1 1 10 100 1000 10000 0123456789101112 -40 dbm -20 dbm 0 dbm integration setting (in decimal) rise time (us) rise time [2] vs. sci setting over input power 0.1 1 10 100 1000 10000 100000 0123456789101112 -40 dbm -20 dbm 0 dbm integration setting (in decimal) rise time (us) rise settling time [3] vs. sci setting over input power 1 10 100 1000 10000 100000 0123456789101112 -40 dbm -20 dbm 0 dbm integration setting (in decimal) fall time (us) fall time [4] vs. sci setting over input power for increased load drive capability, consider a buffer amplifer on the rms output. using an integrating amplifer on the rms output allows for an alternative treatment for faster settling times. an external amplifer optimized for transient settling can also provide additional rms fltering, when operating hm c 1021lp4 e with a lower sc i value. following fgures show how the peak-to-peak ripple decreases with higher sc i settings along with the r f pulse response over different modulations.
p ower d etectors - s m t 11 11 - 20 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 -100 -80 -60 -40 -20 0 20 40 60 80 100 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 sci = 0000 sci = 0100 rmsout (v) rf input voltage (mv) time (ms) rf input rmsout residual ripple for 900 mhz wibro @ sci=0100 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 -100 -80 -60 -40 -20 0 20 40 60 80 100 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 sci = 0000 sci = 0110 rmsout (v) rf input voltage (mv) time (ms) rf input rmsout residual ripple for 900 mhz wibro@ sci=0110 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 sci = 0000 sci = 0100 time (ms) rmsout (v) residual ripple for 900 mhz lte downlink @ sci=0100 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 sci = 0000 sci = 0110 time (ms) rmsout (v) residual ripple for 900 mhz lte downlink @ sci=0110 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 0 50 100 150 200 250 300 350 400 450 500 sci = 0000 sci = 0011 time (us) rmsout (v) residual ripple for 900 mhz wcdma4 @ sci=0011 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 0 50 100 150 200 250 300 350 400 450 500 sci = 0000 sci = 0100 time (us) rmsout (v) residual ripple for 900 mhz wcdma4 @ sci=0100
power detectors - s m t 11 11 - 21 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz log-slope and intercept the HMC1021LP4E provides for an adjustment of output scale with the use of an integrated operational amplifer. logslope and intercept can be adjusted to magnify a specifc portion of the input sensing range, and to fully utilize the dynamic range of the r m s output. a log-slope of 37.3 mv/db (@1900 mhz) is set by connecting rms output to vset through a resistor network for ?=1 (see application schematic). t he log-slope is adjusted by applying the appropriate resistors on the r m s and v set pins. log-intercept is adjusted by applying a d c voltage to the v set pin. o ptimized slope = ? * log-slope optimized intercept = log_intercept C (r fbk /r set ) * v blin e r fbk r fbk // r shun t // r set ? = 1 2 w hen r fbk =0 to set r m so u t =v set , then ? =1/2 if r set is not populated, then ? = ? * (r fbk / (r fbk // r s hun t )) and intercept is at nominal value. e xample: t he logarithmic slope can be simply increased by choosing appropriate r fbk and r s hun t values while not populating the r set resistor on the evaluation board to keep the intercept at nominal value. s etting r fbk =4.7k and r s hun t = 2.2k results in an optimized slope of: optimized slope = ? * log_slope = 1.57* 37.3mv / db optimized slope = 58 mv / db 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 -70 -60 -50 -40 -30 -20 -10 0 10 high slope nominal input power (dbm) rmsout (v) slope = 58 mv/db rset = open rfbk = 4.7 kohm rshunt = 2.2 kohm slope = 37.3 mv/db rset = open rfbk = 4.7 kohm rshunt = 4.7 kohm slope adjustment 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 -70 -60 -50 -40 -30 -20 -10 0 10 vbline = -3.2 v vbline = -1.6 v vbline = -0.8 v vbline = 0 v vbline = +0.8 v vbline = +1.6 v vbline = +3.2 v input power (dbm) rmsout (v) rset = 24 kohm rfbk = 4.7 kohm rshunt = 2.2 kohm intercept adjustment
p ower d etectors - s m t 11 11 - 22 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz dc offset compensation loop internal dc offsets, which are input signal dependant, require continuous cancellation. offset cancellation is a critical function needed for maintenance of measurement accuracy and sensitivity. t he dc offset cancellation loop performs this function, and its response is largely defned by the capacitance (cofs) connected between cofsa, cofs pins. cofs capacitor sets the loop bandwidth of the dc offset compensations. higher cofs values are required for measuring lower rf frequencies. the optimal loop bandwidth setting will allow internal offsets to be cancelled at a minimally acceptable speed. d c o ffset c ancellation loop bandwidth , hz for example: loop bandwidth for d c cancellation with c o fs = 1nf, bandwidth is ~62 khz standby mode t he e nx pin can be used to force the power detector into a low-power standby mode. as e nx is deactivated, power is restored to all of the circuits. t here is no memory of previous conditions. c oming out of stand by mode, internal integration and cofs capacitors will require recharging, so if large sci values have been chosen, the wake-up time will be lengthened. modulation performance C crest factor performance t he hm c 1021lp4 e is able to detect the average power of r f signals with complex modulation schemes with exceptional accuracy. t he proprietary r m s detection core is optimized to accurately detect the r m s power of the modulated r f signals with very high crest factors. t his crest factor immune detection architecture of hm c 1021lp4 e results in detection accuracy of better than 0.2 db over the entire operating frequency and temperature range, compared with the cw response under actual wc dma4 t m test signals shown below: reading error for wcdma 4 carrier wrt cw response @ +25 c reading error for wcdma 4 carrier wrt cw response @ 2200 mhz -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 -70 -60 -50 -40 -30 -20 -10 0 10 100mhz 900mhz 1900mhz 2200mhz 2700mhz 3500mhz 3900mhz input power (dbm) error (db) -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 -70 -60 -50 -40 -30 -20 -10 0 10 +25c +85c -40c input power (dbm) error (db)
power detectors - s m t 11 11 - 23 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz rmsout error vs. crest factor over frequency -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 3 4 5 6 7 8 9 10 11 12 13 14 900 mhz error from cw (-22 dbm) 1900 mhz error from cw (-22 dbm) 2700 mhz error from cw (-19 dbm) 3900 mhz error from cw (-24 dbm) input signal crest factor (db) rmsout reading error (db) p in = rmsout / [log-slope] + [log-intercept], dbm system calibration due to part-to-part variations in log-slope and log-intercept, a system-level calibration is recommended to satisfy absolute accuracy requirements. when performing this calibration, two test points near the top end and bottom-end of the desired detection dynamic range should be chosen. it is best to measure the calibration points in the regions (of frequency and amplitude) where accuracy is most important. the log-slope and log-intercept parameters should be derived and then stored in nonvolatile memory. t hese parameters relate the r m so u t output voltage reading of hm c 1021lp4 to the actual r m s power level as shown below: t he derivation procedure of the log-slope and log-intercept parameters is elaborated below: for example if the following two calibration points were measured at 2.2 ghz: w ith r m so u t = 2.0338v at pin = -10 dbm, and r m so u t = 0.5967v at pin = -50 dbm slope calibration constant = scc scc = = (-50+10)/(0.5967-2.0338) =27.83 db/v intercept calibration constant = i cc icc = pin C scc *rmso ut = -10 C 27.83 * 2.0338 = -66.60 dbm now performing a power measurement at -30 dbm: r m so u t measures 1.3089v [measured pin] = [measured r m so u t ]* scc + i cc [measured pin] = 1.3089*27.83 C 66.60 = -30.17 dbm an error of only 0.17 db factory system calibration measurements should be made using an input signal representative of the application. if the power detector is intended to operate over a wide range of frequencies, then a central frequency should be chosen for calibration.
p ower d etectors - s m t 11 11 - 24 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC1021LP4E v02.0511 rms power detector & envelope tracker, dc - 3.9 ghz layout considerations ? mount rf input coupling capacitors close to the inp and inp pins. ? solder the heat slug on the package underside to a grounded island which can draw heat away from the die with low thermal impedance. t he grounded island should be at r f ground potential. ? connect power detector ground to the rf ground plane, and mount the supply decoupling capacitors close to the supply pins. defnitions ? log-slope: slope of p in C> rmsout transfer characteristic. in units of mv/db ? log-intercept: x-axis intercept of p in C> rmsout transfer characteristic. in units of dbm. ? rms output error: the difference between the measured p in and actual p in using a line of best ft. [measured_p in ] = [measured_ rmsout] / [best-ft-slope] + [best-ft-intercept], dbm ? input dynamic range: the range of average input power for which there is a corresponding rms output voltage with rms output error falling within a specifc error tolerance. ? crest factor: peak power to average power ratio for time-varying signals.

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