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general description the MAX2056 general-purpose, high-performance vari- able-gain amplifier (vga) is designed to operate in the 800mhz to 1000mhz frequency range*. this device fea- tures 15.5db of gain, 4.5db of noise figure, and an out- put 1db compression point of 23.5dbm. the MAX2056 also provides an exceptionally high oip3 level of 39dbm, which is maintained over the entire attenuation range. in addition, the on-chip analog attenuators yield infinite control and high attenuation accuracy over selectable 22db or 44db control ranges. each of these features makes the MAX2056 an ideal vga for cellular band gsm, cdma2000 , w-cdma, and iden transmit- ter and power amplifier agc circuits. the MAX2056 is pin compatible with the max2057 1700mhz to 2500mhz vga, making this family of amplifiers ideal for applications where a common pc board layout is used for both frequency bands. the MAX2056 operates from a single +5v supply and is available in a compact 36-pin thin qfn package (6mm x 6mm x 0.8mm) with an exposed pad. electrical per- formance is guaranteed over the extended -40? to +85? temperature range. applications gsm 850/gsm 900 2g and 2.5g edge base- station transmitters and power amplifiers cellular cdmaone, cdma2000, and integrated digital enhanced network (iden) base-station transmitters and power amplifiers w-cdma 850mhz and other 3g base-station transmitters and power amplifiers transmitter gain control receiver gain control broadband systems automatic test equipment digital and spread-spectrum communication systems microwave terrestrial links cdmaone is a trademark of cdma development group. cdma2000 is a registered trademark of telecommunications industry association. iden is a registered trademark of motorola, inc. features ? 800mhz to 1000mhz rf frequency range* ? 39dbm constant oip3 (over all gain settings) ? 23.5dbm output 1db compression point ? 15.5db typical gain at maximum gain setting ? 0.15db gain flatness over 100mhz bandwidth ? 4.5db noise figure at maximum gain setting (using 1 attenuator) ? two gain-control ranges: 22db and 44db ? analog gain control ? single +5v supply voltage ? pin compatible with max2057, 1700mhz to 2500mhz rf vga ? external current-setting resistors provide option for operating vga in reduced-power/reduced- performance mode ? lead-free package available * note: operation beyond this range is possible, but has not been characterized. MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control ________________________________________________________________ maxim integrated products 1 ordering information 19-3508; rev 0; 2/05 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. evaluation kit available part temp range pin-package pkg code MAX2056etx - 40c to + 85c 36 thin qfn -ep ** 6m m x 6m m t3666-2 MAX2056etx-t - 40c to + 85c 36 thin qfn -ep ** 6m m x 6m m t3666-2 MAX2056etx+d - 40c to + 85c 36 thin qfn -ep ** 6m m x 6m m t3666-2 m ax 2056e tx + td - 40c to + 85c 36 thin qfn -ep ** 6m m x 6m m t3666-2 ** ep = exposed paddle. + = lead (pb) free. d = dry pack. t = tape-and-reel package. pin configuration/functional diagram appears at end of data sheet.
MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control 2 _______________________________________________________________________________________ absolute maximum ratings stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. v cc to gnd ...........................................................-0.3v to +5.5v v cntl to gnd (with v cc applied)................................0 to 4.75v current into v cntl pin (v cc grounded) .............................40ma all other pins to gnd.................................-0.3v to (v cc + 0.3v) rf input power (in, in_a, attn_out, out_a) ............+20dbm rf input power (amp_in)...............................................+12dbm ja (natural convection)...................................................35?/w ja (1m/s airflow) .............................................................31?/w ja (2.5m/s airflow) ..........................................................29?/w jc (junction to exposed paddle) ....................................10?/w operating temperature range ...........................-40? to +85? storage temperature range .............................-65? to +150? junction temperature ......................................................+150? lead temperature (soldering, 10s) .................................+300? ac electrical characteristics (typical operating circuit with one attenuator connected, v cc = +4.75v to +5.25v, t a = -40? to +85?, unless otherwise noted. typical values are at v cc = +5.0v, r1 = 1.2k ? , r2 = 3.92k ? , p out = +5dbm, f in = 900mhz, v cntl = 1v, 50 ? system impedance, second attenuator is not connected, t a = +25?, unless otherwise noted.) (note 3) parameter conditions min typ max units frequency range 800 1000 mhz gain t a = +25? 15.5 db v cntl = 1v +0.82 v cntl = 1.8v +0.26 v cntl = 2.6v +0.25 t a = +25? to -40? v cntl = 3.5v -0.18 v cntl = 1v -0.51 v cntl = 1.8v -0.11 v cntl = 2.6v -0.16 maximum gain variation t a = +25? to +85? v cntl = 3.5v +0.09 db reverse isolation 29 db noise figure (note 4) 4.5 db output 1db compression point +23.5 dbm output 2nd-order intercept point from maximum gain to 15db attenuation, measured at f 1 + f 2 (note 5) +54 dbm output 3rd-order intercept point from maximum gain to 15db attenuation (note 5) +39 dbm dc electrical characteristics (v cc = +4.75v to +5.25v, no rf signals applied, all input and output ports terminated with 50 ? , t a = -40? to +85?, unless other- wise noted. typical values are at v cc = +5.0v, t a = +25?, unless otherwise noted.) parameter conditions min typ max units supply voltage 4.75 5 5.25 v supply current r1 = 1.2k ? , r2 = 3.92k ? (note 1) 136 167 ma r set1 current r1 = 1.2k ? (note 1) 1 ma r set2 current r2 = 3.92k ? (note 1) 0.33 ma gain-control voltage range (note 2) 1.0 4.5 v gain-control pin input resistance v cntl = 1v to 4.5v 250 500 k ?
MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control _______________________________________________________________________________________ 3 ac electrical characteristics (continued) (typical operating circuit with one attenuator connected, v cc = +4.75v to +5.25v, t a = -40? to +85?, unless otherwise noted. typical values are at v cc = +5.0v, r1 = 1.2k ? , r2 = 3.92k ? , p out = +5dbm, f in = 900mhz, v cntl = 1v, 50 ? system impedance, second attenuator is not connected, t a = +25?, unless otherwise noted.) (note 3) note 1: total supply current reduces as r1 and r2 are increased. note 2: operating outside this range for extended periods may affect device reliability. limit pin input current to 40ma when v cc is not present. note 3: all limits include external component losses, unless otherwise noted. note 4: noise figure increases by approximately 1db for every 1db of gain reduction. note 5: f 1 = 900mhz, f 2 = 901mhz, +5dbm/tone at out. note 6: switching time is measured from 50% of the control signal to when the rf output settles to ?db. parameter conditions min typ max units t a = +25? to +85? -0.46 output 3rd-order intercept point variation over temperature t a = +25? to -40? +1.35 db 2nd harmonic from maximum gain to 15db attenuation, p out = +5dbm -55 dbc 3rd harmonic from maximum gain to 15db attenuation, p out = +5dbm -68 dbc one attenuator 18.3 22.3 rf gain-control range f rf = 800mhz to 1000mhz, v cntl = 1v to 4.5v two attenuators 36.6 44.6 db rf gain-control slope -10.7 db/v maximum rf gain-control slope maximum slope vs. gain-control voltage -17.2 db/v gain flatness over 100mhz bandwidth peak-to-peak for all settings 0.15 db attenuator switching time 15db attenuation change (note 6) 500 ns attenuator insertion loss second attenuator (in_a, out_a) 1.7 db input return loss entire band, all gain settings 15 db output return loss entire band, all gain settings 15 db group delay input/output 50 ? lines de-embedded 600 ps group delay flatness over 100mhz bandwidth peak to peak 100 ps group delay change vs. gain control v cntl = 1v to 4v 100 ps insertion phase change vs. gain control v cntl = 1v to 4v 20 degrees
MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control 4 _______________________________________________________________________________________ t ypical operating characteristics one attenuator configuration (typical application circuit with one attenuator connected, v cc = +5.0v, r1 = 1.2k ? , r2 = 3.92k ? , f in = 900mhz maximum gain setting, p out = +5dbm, linearity measured at p out = +5dbm/tone, t a = +25?, unless otherwise noted.) 100 120 110 140 130 150 160 4.750 5.000 4.875 5.125 5.250 supply current vs. v cc MAX2056 toc01 v cc (v) supply current (ma) t a = +85 c t a = +25 c t a = -40 c 30 25 20 15 10 5 0 700 900 800 1000 1100 1200 1300 1400 1500 input return loss vs. rf frequency MAX2056 toc02 rf frequency (mhz) input return loss (db) t a = +85 c t a = +25 c t a = -40 c MAX2056 toc03 t a = +85 c t a = +25 c t a = -40 c 30 25 20 15 10 5 0 700 900 800 1000 1100 1200 1300 1400 1500 output return loss vs. rf frequency rf frequency (mhz) output return loss (db) gain vs. v cntl MAX2056 toc04 v cntl (v) gain (db) 3.5 3.0 2.5 2.0 1.5 -5 0 5 10 15 20 -10 1.0 4.0 t a = +85 c t a = +25 c t a = -40 c 11 12 13 14 15 16 17 gain vs. rf frequency MAX2056 toc05 gain (db) t a = +85 c t a = +25 c t a = -40 c 700 900 800 1000 1100 1200 1300 1400 1500 rf frequency (mhz) 20 25 30 35 reverse isolation vs. rf frequency MAX2056 toc06 isolation (db) t a = +85 c t a = +25 c t a = -40 c 700 900 800 1000 1100 1200 1300 1400 1500 rf frequency (mhz) 30 25 20 15 10 5 0 input return loss vs. rf frequency MAX2056 toc07 input return loss (db) 700 900 800 1000 1100 1200 1300 1400 1500 rf frequency (mhz) maximum gain 21db gain reduction MAX2056 toc08 30 25 20 15 10 5 0 output return loss vs. rf frequency output return loss (db) 700 900 800 1000 1100 1200 1300 1400 1500 rf frequency (mhz) maximum gain 21db gain reduction -17 -7 -12 3 -2 8 13 18 23 MAX2056 toc09 gain (db) gain vs. rf frequency 700 900 800 1000 1100 1200 1300 1400 1500 rf frequency (mhz) maximum gain 22db gain reduction
MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control _______________________________________________________________________________________ 5 20 30 25 40 35 45 50 55 60 MAX2056 toc10 reverse isolation (db) reverse isolation vs. rf frequency 700 900 800 1000 1100 1200 1300 1400 1500 rf frequency (mhz) 21db gain reduction maximum gain 2 3 5 4 6 7 noise figure vs. rf frequency MAX2056 toc11 rf frequency (mhz) noise figure (db) 800 900 850 950 1000 t a = +85 c t a = +25 c t a = -40 c MAX2056 toc12 2 3 5 4 6 7 noise figure vs. rf frequency rf frequency (mhz) noise figure (db) 800 900 850 950 1000 v cc = 5.25v v cc = 4.75v v cc = 5.00v 36 37 39 38 40 41 output ip3 vs. frequency MAX2056 toc13 output ip3 (dbm) rf frequency (mhz) 800 900 850 950 1000 t a = +85 c t a = +25 c t a = -40 c MAX2056 toc14 36 37 39 38 40 41 output ip3 vs. frequency output ip3 (dbm) rf frequency (mhz) 800 900 850 950 1000 v cc = 5.25v v cc = 4.75v v cc = 5.00v 20 30 25 40 35 45 50 025 input ip3 vs. attenuation MAX2056 toc15 attenuation (db) input ip3 (dbm) 10 51520 t a = +85 c t a = +25 c t a = -40 c MAX2056 toc16 20 30 25 40 35 45 50 025 output ip3 vs. attenuation attenuation (db) output ip3 (dbm) 10 51520 t a = +85 c t a = +25 c t a = -40 c 40 38 36 34 32 -6 3 -3 0 6 9 12 output ip3 vs. output power MAX2056 toc17 output power per tone (dbm) output ip3 (dbm) 40 45 55 50 60 65 output ip2 vs. rf frequency MAX2056 toc18 rf frequency (mhz) output ip2 (dbm) 800 900 850 950 1000 t a = +85 c t a = +25 c t a = -40 c t ypical operating characteristics (continued) one attenuator configuration (typical application circuit with one attenuator connected, v cc = +5.0v, r1 = 1.2k ? , r2 = 3.92k ? , f in = 900mhz maximum gain setting, p out = +5dbm, linearity measured at p out = +5dbm/tone, t a = +25?, unless otherwise noted.)
MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control 6 _______________________________________________________________________________________ 45 50 60 55 65 70 MAX2056 toc19 output ip2 vs. rf frequency rf frequency (mhz) output ip2 (dbm) 800 900 850 950 1000 v cc = 5.25v v cc = 4.75v v cc = 5.00v 35 45 40 55 50 60 65 025 input ip2 vs. attenuation MAX2056 toc20 attenuation (db) input ip2 (dbm) 10 51520 t a = +85 c t a = +25 c t a = -40 c MAX2056 toc21 35 45 40 55 50 60 65 025 output ip2 vs. attenuation attenuation (db) output ip2 (dbm) 10 51520 t a = +85 c t a = +25 c t a = -40 c 20 22 21 24 23 25 26 800 900 850 950 1000 output p1db vs. rf frequency MAX2056 toc22 rf frequency (mhz) output p1db (dbm) t a = +85 c t a = +25 c t a = -40 c MAX2056 toc23 20 22 21 24 23 25 26 800 900 850 950 1000 output p1db vs. rf frequency rf frequency (mhz) output p1db (dbm) v cc = 5.25v v cc = 4.75v v cc = 5.00v t ypical operating characteristics (continued) one attenuator configuration (typical application circuit with one attenuator connected, v cc = +5.0v, r1 = 1.2k ? , r2 = 3.92k ? , f in = 900mhz maximum gain setting, p out = +5dbm, linearity measured at p out = +5dbm/tone, t a = +25?, unless otherwise noted.)
MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control _______________________________________________________________________________________ 7 40 30 35 20 25 15 10 5 0 700 900 1000 800 1100 1200 1300 1400 1500 input return loss vs. rf frequency MAX2056 toc24 rf frequency (mhz) input return loss (db) t a = +85 c t a = +25 c t a = -40 c 30 25 20 15 10 5 0 MAX2056 toc25 700 900 1000 800 1100 1200 1300 1400 1500 output return loss vs. rf frequency rf frequency (mhz) output return loss (db) t a = +85 c t a = +25 c t a = -40 c -25 -35 1.0 1.5 2.0 2.5 3.0 3.5 4.0 -5 -15 5 15 gain vs. v cntl MAX2056 toc26 v cntl (v) gain (db) t a = +85 c t a = +25 c t a = -40 c 7 9 13 11 15 17 700 900 1000 800 1100 1200 1300 1400 1500 gain vs. rf frequency MAX2056 toc27 rf frequency (mhz) gain (db) t a = +85 c t a = +25 c t a = -40 c 35 30 25 20 MAX2056 toc28 isolation (db) 700 900 1100 1300 1500 reverse isolation vs. rf frequency rf frequency (mhz) t a = +85 c t a = +25 c t a = -40 c MAX2056 toc29 30 25 20 15 10 5 0 input return loss vs. rf frequency input return loss (db) 700 900 800 1000 1100 1200 1300 1400 1500 rf frequency (mhz) maximum gain 42db gain reduction MAX2056 toc30 30 25 20 15 10 5 0 output return loss vs. rf frequency output return loss (db) 700 900 800 1000 1100 1200 1300 1400 1500 rf frequency (mhz) maximum gain 42db gain reduction -45 -35 -15 -25 5 15 -5 25 MAX2056 toc31 gain (db) gain vs. rf frequency 700 900 800 1000 1100 1200 1300 1400 1500 rf frequency (mhz) 44db gain reduction maximum gain t ypical operating characteristics two attenuator configuration (typical application circuit with two attenuators connected, v cc = +5.0v, r1 = 1.2k ? , r2 = 3.92k ? , f in = 900mhz maximum gain setting, p out = +5dbm, linearity measured at p out = +5dbm/tone, t a = +25?, unless otherwise noted.)
MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control 8 _______________________________________________________________________________________ 20 40 30 60 50 70 80 MAX2056 toc32 reverse isolation (db) reverse isolation vs. rf frequency 700 900 1100 1300 1500 rf frequency (mhz) 42db gain reduction maximum gain 4 5 7 6 8 9 MAX2056 toc33 noise figure vs. rf frequency rf frequency (mhz) noise figure (db) 800 900 850 950 1000 t a = +85 c t a = +25 c t a = -40 c 36 37 39 38 40 41 MAX2056 toc34 output ip3 (dbm) output ip3 vs. rf frequency rf frequency (mhz) 800 900 850 950 1000 t a = +85 c t a = +25 c t a = -40 c 40 45 55 50 60 65 MAX2056 toc35 output ip2 (dbm) output ip2 vs. rf frequency rf frequency (mhz) 800 900 850 950 1000 t a = +85 c t a = +25 c t a = -40 c t ypical operating characteristics (continued) two attenuator configuration (typical application circuit with two attenuators connected, v cc = +5.0v, r1 = 1.2k ? , r2 = 3.92k ? , f in = 900mhz maximum gain setting, p out = +5dbm, linearity measured at p out = +5dbm/tone, t a = +25?, unless otherwise noted.)
MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control _______________________________________________________________________________________ 9 pin description pin name function 1, 3, 4, 6, 7, 9, 10, 12, 14, 18, 19, 21?4, 27, 28, 30, 31, 33, 34, 36 gnd ground. connect to the board? ground plane using low-inductance layout techniques. 2 out_a second-attenuator output. internally matched to 50 ? over the operating frequency band. connect to in through a dc-blocking capacitor if greater than 22db of gain-control range is required. no connection is required if the second attenuator is not used. 5, 13, 16, 25, 32 v cc power supply. bypass each pin to gnd with capacitors as shown in the typical application circuit . place capacitors as close to the pin as possible. 8 in_a second-attenuator input. internally matched to 50 ? over the operating frequency band. connect to a 50 ? rf source through a dc-blocking capacitor if greater than 22db of gain-control range is required. no connection is required if the second attenuator is not used. 11 v cntl analog gain-control input. limit voltages applied to this pin to a 1v to 4.5v range when v cc is present to ensure device reliability. 15 r set1 first-stage amplifier bias-current setting. connect to gnd through a 1.2k ? resistor. 17 r set2 second-stage amplifier bias-current setting. connect to gnd through a 3.92k ? resistor. 20 out rf output. internally matched to 50 ? over the operating frequency band. requires a dc-blocking capacitor. 26 amp_in amplifier input. internally matched to 50 ? over the operating frequency band. connect to attn_out through a dc-blocking capacitor. 29 attn_out attenuator output. internally matched to 50 ? over the operating frequency band. connect to amp_in through a dc-blocking capacitor. 35 in rf input. internally matched to 50 ? over the operating frequency band. connect to a 50 ? rf source through a dc-blocking capacitor if the second attenuator is not used. exposed paddle gnd exposed paddle ground plane. this paddle affects rf performance and provides heat dissipation. this paddle must be soldered evenly to the board? ground plane for proper operation.
MAX2056 detailed description the MAX2056 general-purpose, high-performance vga with analog gain control is designed to interface with 50 ? systems operating in the 800mhz to 1000mhz fre- quency range. the MAX2056 integrates two attenuators to provide 22db or 44db of precision analog gain control, as well as a two-stage amplifier that has been optimized to provide high gain, high ip3, low noise figure, and low- power consumption. the bias current of each amplifier stage can be adjusted by individual external resistors to further reduce power consumption for applications that do not require high linearity. 800mhz to 1000mhz variable-gain amplifier with analog gain control 10 ______________________________________________________________________________________ MAX2056 27 ep 26 25 24 23 32 31 30 29 28 gnd v gc gnd gnd gnd out gnd gnd gnd gnd gnd gnd gnd out_a gnd in_a c4 c7 c6 c10 c13 c5 rf output r1 r2 c2 c1 c15 c9 c3 v cc v cc v cc c14 c8 v cc rf input* * note: connect the input according to the solid bold line if one attenuator is used. connect the input according to the broken line if two attenuators are used. v cc v cc gnd gnd in gnd gnd v cc gnd gnd attn_out amp_in gnd 36 35 34 33 14 15 16 17 18 10 11 12 13 22 20 21 19 5 4 3 2 9 8 7 6 1 + - attenuation control circuitry v cc v cntl gnd v cc gnd r set1 v cc r set2 gnd figure 1. typical application circuit
applications information analog attenuation control a single input voltage at the v cntl pin adjusts the gain of the MAX2056. up to 22db of gain-control range is provided through a single attenuator. at the maximum gain setting, each attenuator? insertion loss is approxi- mately 1.7db. with the single attenuator at the maxi- mum gain setting, the device provides a nominal 15.5db of cascaded gain and 4.5db of cascaded noise figure. if a larger gain-control range is desired, a second on- chip attenuator can be connected in the signal path to provide an additional 22db of gain-control range. with the second attenuator connected at the maximum gain setting, the device typically exhibits 13.8db of cascad- ed gain. note that the v cntl pin simultaneously adjusts both on-chip attenuators. the v cntl input voltage dri- ves a high-impedance load (>250k ? ). it is suggested that a current-limiting resistor be included in series with this connection to limit the input current to less than 40ma should the control voltage be applied when v cc is not present. a series resistor of greater than 200 ? will provide complete protection for 5v control voltage ranges. limit v cntl input voltages to a 1.0v to 4.5v range when v cc is present to ensure the reliability of the device. amplifier bias current the MAX2056 integrates a two-stage amplifier to simul- taneously provide high gain and high ip3. optimal per- formance is obtained when r1 and r2 are equal to 1.2k ? and 3.92k ? , respectively. the typical supply cur- rent is 136ma and the typical output ip3 is 39dbm under these conditions. increasing r1 and r2 from the nominal values of 1.2k ? and 3.92k ? reduces the bias current of each amplifier stage, which reduces the total power consumption and ip3 of the device. this feature can be utilized to further decrease power consumption for applications that do not require high ip3. layout considerations a properly designed pc board is an essential part of any rf/microwave circuit. keep rf signal lines as short as possible to reduce losses, radiation, and induc- tance. for best performance, route the ground-pin traces directly to the exposed pad underneath the package. this pad must be connected to the ground plane of the board by using multiple vias under the device to provide the best rf and thermal conduction path. solder the exposed pad on the bottom of the device package to a pc board exposed pad. power-supply bypassing proper voltage-supply bypassing is essential for high- frequency circuit stability. bypass each v cc pin with capacitors placed as close to the device as possible. place the smallest capacitor closest to the device. refer to the MAX2056 evaluation kit data sheet for more details. exposed paddle rf and thermal considerations the ep of the MAX2056? 36-pin thin qfn-ep package provides a low-thermal-resistance path to the die. it is important that the pc board on which the ic is mounted be designed to conduct heat from this contact. in addi- tion, the ep provides a low-inductance rf ground path for the device. the ep must be soldered to a ground plane on the pc board either directly or through an array of plated via holes. soldering the pad to ground is also critical for efficient heat transfer. use a solid ground plane wher- ever possible. MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control ______________________________________________________________________________________ 11 table 1. typical application circuit components values designation value type c1, c3, c5, c10 47pf microwave capacitors (0402) c2, c4, c6, c8, c9 1000pf microwave capacitors (0402) c7 3.9pf microwave capacitor (0402) c13, c14, c15 0.1? microwave capacitors (0603) r1 1.2k ? ?% resistor (0402) r2 3.92k ? ?% resistor (0402)
MAX2056 800mhz to 1000mhz variable-gain amplifier with analog gain control maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2005 maxim integrated products printed usa is a registered trademark of maxim integrated products, inc. pin configuration/ functional diagram MAX2056 27 26 25 24 23 32 31 30 29 28 gnd gnd gnd gnd out gnd gnd gnd gnd gnd gnd out_a gnd gnd in_a v cc v cc gnd gnd in gnd gnd v cc gnd gnd attn_out amp_in gnd v cntl gnd v cc gnd r set1 v cc r set2 gnd 36 35 34 33 14 15 16 17 18 10 11 12 13 22 20 21 19 5 4 3 2 9 8 7 6 1 attenuation control circuitry ep thin qfn chip information transistor count: 5723 process: bicmos package information for the latest package outline information, go to www.maxim-ic.com/packages .

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