attenuators - smt 5 5 - 164 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com hmc539lp3 / 539lp3e 0.25 db lsb gaas mmic 5-bit digital positive control attenuator, dc - 4 ghz v00.0605 functional diagram electrical specifi cations, t a = +25 c, with vdd = +5v & vctl = 0/+5v (unless otherwise noted) the hmc539lp3 / HMC539LP3E is ideal for both rf and if applications: ? cellular infrastructure ? ism, mmds, wlan, wimax, wibro ? microwave radio & vsat ? test equipment and sensors 0.25 db lsb steps to 7.75 db 0.05 db typical step error low insertion loss: 0.7 db high ip3: +50 dbm single control line per bit ttl/cmos compatible control single +5v supply 3x3 mm smt package the hmc539lp3 & HMC539LP3E are broadband 5-bit gaas ic digital attenuators in low cost lead- less surface mount packages. this single positive control line per bit digital attenuator utilizes an off chip ac ground capacitor for near dc operation, making it suitable for a wide variety of rf and if applications. covering dc to 4 ghz, the insertion loss is less than 0.7 db typical. the attenuator bit values are 0.25 (lsb), 0.5, 1, 2, and 4 db for a total attenu- ation of 7.75 db. attenuation accuracy is excellent at 0.05 db typical step error. the attenuator also features a high iip3 of +50 dbm. five ttl/cmos control inputs are used to select each attenuation state. a single vdd bias of +5v is required. parameter frequency (ghz) min. typ. max. units insertion loss dc - 1.5 ghz 1.5 - 3.0 ghz 3.0 - 4.0 ghz 0.7 1.0 1.3 1.0 1.3 1.7 db db db attenuation range dc - 4 ghz 7.75 db return loss (rf1 & rf2, all atten. states) dc - 3 ghz 3.0 - 4.0 ghz 25 20 db db attenuation accuracy: (referenced to insertion loss) all states dc - 3 ghz 3.0 - 4.0 ghz (0.2 + 2% of atten. setting) max. (0.2 + 4% of atten. setting) max. db db input power for 0.1 db compression 0.1 - 4.0 ghz 28 dbm input third order intercept point (two-tone input power= 0 dbm each tone) 0.1 - 4.0 ghz 50 dbm switching characteristics trise, tfall (10/90% rf) ton, toff (50% ctl to 10/90% rf) dc - 4 ghz 48 52 ns ns typical applications features general discription
attenuators - smt 5 5 - 165 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com return loss rf1, rf2 (only major states are shown) insertion loss normalized attenuation (only major states are shown) bit error vs. frequency (only major states are shown) relative phase vs. frequency (only major states are shown) bit error vs. attenuation state -3 -2.5 -2 -1.5 -1 -0.5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 +25 c +85 c -40 c insertion loss (db) frequency (ghz) -10 -8 -6 -4 -2 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 normalized attenuation (db) frequency (ghz) -0.5 -0.25 0 0.25 0.5 012345678 bit error (db) attenuation state (db) 3 ghz 40 mhz 500 mhz 2 ghz 1 ghz 100 mhz 4 ghz -0.25 -0.15 -0.05 0.05 0.15 0.25 0.35 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 bit error (db) frequency (ghz) 1 db 0.25 db 0.5 db 2 db 4 db 7.75 db -20 -15 -10 -5 0 5 10 15 20 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 relative phase (deg) frequency (ghz) 7.75 db 4 db 2 db 0.25-1 db -45 -36 -27 -18 -9 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 return loss (db) frequency (ghz) 1 db 2 db 4 db i.l.db 7.75 db 0.5 db 0.25 db hmc539lp3 / 539lp3e 0.25 db lsb gaas mmic 5-bit digital positive control attenuator, dc - 4 ghz v00.0605
attenuators - smt 5 5 - 166 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com truth table control voltage bias voltage & current worst case step error between successive attenuation states vdd = +5.0 vdc 10% vdd (vdc) idd (typ.) (ma) +4.5 3.3 +5.0 3.5 +5.5 3.7 state bias condition low 0 to +0.8v @ -5 ua typ. high +2.0 to + 5.0 vdc @ 30 ua typ. note: vdd = +5v control voltage input attenuation state rf1 - rf2 v1 4 db v2 2 db v3 1 db v4 0.5 db v5 0.25 db high high high high high reference i.l. high high high high low 0.25 db high high high low high 0.5 db high high low high high 1 db high low high high high 2 db low high high high high 4 db low low low low low 7.75 db any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. -0.25 -0.15 -0.05 0.05 0.15 0.25 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 step error (db) frequency (ghz) hmc539lp3 / 539lp3e 0.25 db lsb gaas mmic 5-bit digital positive control attenuator, dc - 4 ghz v00.0605
attenuators - smt 5 5 - 167 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com absolute maximum ratings outline drawing rf input power (dc - 4 ghz) +29 dbm (t = +85 c) control voltage range (v1 to v5) -1v to vdd +1v bias voltage (vdd) +7.0 vdc channel temperature 150 c continuous pdiss (t = 85 c) (derate 12.0 mw/c above 85 c) 0.781 w thermal resistance 83 c/w storage temperature -65 to +150 c operating temperature -40 to +85 c esd sensitivity (hbm) class 1a electrostatic sensitive device observe handling precautions hmc539lp3 / 539lp3e 0.25 db lsb gaas mmic 5-bit digital positive control attenuator, dc - 4 ghz v00.0605 notes: 1. leadframe material: copper alloy 2. dimensions are in inches [millimeters] 3. lead spacing tolerance is non-cumulative 4. pad burr length shall be 0.15mm maximum. pad burr height shall be 0.05mm maximum. 5. package warp shall not exceed 0.05mm. 6. all ground leads and ground paddle must be soldered to pcb rf ground. 7. refer to hittite application note for suggested land pattern. part number package body material lead finish msl rating package marking [3] hmc539lp3 low stress injection molded plastic sn/pb solder msl1 [1] 539 xxxx HMC539LP3E rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] 539 xxxx [1] max peak refl ow temperature of 235 c [2] max peak refl ow temperature of 260 c [3] 4-digit lot number xxxx package information
attenuators - smt 5 5 - 168 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com pin descriptions pin number function description interface schematic 1vdd supply voltage. 2, 11 rf1, rf2 this pin is dc coupled and matched to 50 ohm. blocking capacitors are required. select value based on lowest frequency of operation. 3, 9, 10 n/c these pins should be connected to pcb rf ground to maximize performance. 4 - 8 acg1 - acg5 external capacitor to ground is required. select value for lowest frequency of operation. place capacitor as close to pins as possible. 12 - 16 v1 - v5 see truth table and control voltage table. gnd package bottom has an exposed metal paddle that must be connected to rf ground. application circuit hmc539lp3 / 539lp3e 0.25 db lsb gaas mmic 5-bit digital positive control attenuator, dc - 4 ghz v00.0605 recommended component values c1, c2 100 pf 10% c3 1,000 pf 10% c4 330 pf 10% r1 - r5 100 ohm 10%
attenuators - smt 5 5 - 169 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com evaluation pcb the circuit board used in the fi nal application should use rf circuit design techniques. signal lines should 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. the evaluation circuit board shown is available from hittite upon request. list of materials for evaluation pcb 110078 [1] item description j1 - j2 pcb mount sma connector j3 - j9 dc pin c1, c2 100 pf capacitor, 0402 pkg. c3 1000 pf capacitor, 0402 pkg. c4 330 pf capacitor, 0402 pkg. r1 - r5 100 ohm resistor 0402 u1 hmc539lp3 / HMC539LP3E digital attenuator pcb [2] 110076 evaluation pcb [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 hmc539lp3 / 539lp3e 0.25 db lsb gaas mmic 5-bit digital positive control attenuator, dc - 4 ghz v00.0605
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