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general description the max1350?ax1357 offer two programmable high- side current-sense amplifiers and two drive amplifiers integrated in a single package. the current-sense amplifiers have a 5v to 32v common- mode input range and provide a voltage output that is a multiple of the sense voltage. the common-mode input range is independent of supply voltage. an external sense resistor determines the range of current monitored by a current-sense amplifier. gains of 2 or 10 are avail- able with a typical input-referred offset voltage of zero or 3mv. the 3mv offset option is ideal for applications where offset nulling is required. the drive amplifiers provide up to ?0ma of output cur- rent capability and a high output capacitive load toler- ance. output transients are limited to ?00mv during power-up and power-down events. the drive amplifiers feature a digitally controllable fast output clamp to ground. the drive amplifier outputs are current limited and are offered with gains of 2 or 4. the drive amplifiers draw approximately 4.75ma, while the current-sense amplifiers draw approximately 250? with full-scale sense inputs. in shutdown mode, the total supply current reduces to less than 1?. the max1350?ax1357 are available in a 20-pin tssop package and operate over the extended (-40? to +85?) temperature range. applications cellular base stations industrial process control power amplifiers features ? high-side current-sense amplifier with gain of 2 or 10 ? ?% current-sense accuracy ? wide 5v to 32v common-mode voltage range independent of supply voltage ? adjustable low noise 0 to 5v or 0 to 10v output voltage ranges with ?0ma gate drive ? drive amplifier features fast clamp to ground max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers ________________________________________________________________ maxim integrated products 1 ordering information 19-3568; rev 1; 12/05 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. * future product? ontact factory for availability. ** for parts that operate over a wider temperature range, contact factory for availability. pin configurations 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 clamp1 cs1+ cs1- out1 outcs1 shdn cal1 n.c. top view out2 cs2- cs2+ clamp2 cal2 outcs2 in2 in1 12 11 9 10 v dd v ss drgnd csgnd max1350 max1351 max1356 max1357 tssop 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 clamp1 cs1+ cs1- out1 outcs1 shdn n.c. n.c. out2 cs2- cs2+ clamp2 n.c. outcs2 in2 in1 12 11 9 10 v dd v ss drgnd csgnd max1352 max1355 tssop part temp range** pin-package max1350 eup* -40? to +85? 20 tssop max1351 eup* -40? to +85? 20 tssop max1352 eup* -40? to +85? 20 tssop max1353 eup* -40? to +85? 20 tssop max1354 eup -40? to +85? 20 tssop max1355 eup* -40? to +85? 20 tssop max1356 eup* -40? to +85? 20 tssop max1357 eup* -40? to +85? 20 tssop selector guide appears at end of data sheet.
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v dd = +10v, v ss = 0v, v cs_+ = 30v, c outcs1 , c outcs2 to csgnd = 10pf, c out1 , c out2 to drgnd = 10nf, t a = -40? to +85?, unless otherwise noted. typical values are at t a = +25?.) 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 dd to v ss ..............................................................-0.3v to +14v v ss to csgnd or drgnd....................................... -1v to +0.3v csgnd to drgnd............................................... -0.3v to +0.3v cs1+, cs2+ to v ss ...............................................-0.3v to +34v cs1- to cs1+ .......................................................... -6v to +0.3v or if cs1+ < 5.7v ...................................(-cs1 - 0.3)v to +0.3v cs2- to cs2+ .......................................................... -6v to +0.3v or if cs2+ < 5.7v ...................................(-cs2 - 0.3)v to +0.3v out1, out2 to v ss ......................................-0.3 to (v dd + 0.3v) cal1, cal2, shdn to csgnd or drgnd..............-0.3v to +6v clamp1, clamp2 to csgnd or drgnd ...............-0.3v to +6v outcs1, outcs2 to v ss ......................................-0.3v to +34v in1, in2 to v ss ..............................................-0.3 to (v dd + 0.3v) continuous power dissipation (t a = +70?) 20-pin tssop (derate 11mw/? above +70?) .......879.1mw operating temperature range ...........................-40? to +85? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? parameter symbol conditions min typ max units high-side current-sense amplifier operating and common-mode input voltage range v cs _ + 532v common-mode rejection ratio cmrr 5v < v cs _ + < 32v, measured at dc 110 db current-sense negative input bias current i cs- -1 ?.1 +1 a max1352?ax1355, t a = +25? -0.7 ?.2 +0.7 input-referred offset voltage v os max1350/max1351/max1356/max1357, t a = +25? (note 1) 2.0 3.0 4.0 mv input-referred offset drift ? ?/? max1350?ax1353 2 1250 full-scale sense voltage range (note 2) v sense max1354?ax1357 2 500 mv v sense = 100mv to 1250mv -1.0 ?.3 +1.0 v sense = 20mv to 100mv -5 ?.3 +5 total output voltage error (note 3) v sense = 2mv to 20mv -50 ?3 +50 % output impedance r outcs_ measured at dc 8.75 12.5 17.25 k ? max1350/max1351 0.010 2.506 max1352/max1353 0.004 2.500 max1354/max1355 0.02 5.00 output voltage range (note 4) v outcs_ max1356/max1357 0.05 5.03 v voltage gain error ?.1 % -3db bandwidth bw 1.15 mhz output settling time to 0.1% of final value 10 ? output capacitive load (note 5) 10 pf input referred noise at 1khz 25 nv/ hz power-supply rejection ratio psrr 5v < v cs_+ < 32v, measured at dc 110 db
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers _______________________________________________________________________________________ 3 electrical characteristics (continued) (v dd = +10v, v ss = 0v, v cs_+ = 30v, c outcs1 , c outcs2 to csgnd = 10pf, c out1 , c out2 to drgnd = 10nf, t a = -40? to +85?, unless otherwise noted. typical values are at t a = +25?.) parameter symbol conditions min typ max units power-up time to 0.1% of final value 100 ? saturation recovery time 100 ? shutdown recovery time 100 ? drive amplifier at out_, i out_ = ?0ma v ss + 1 v dd - 1 output voltage range for full accuracy at out_, i out_ = ?.1ma v ss + 0.75 v dd - 0.75 v drive amplifier input bias current i in_ (note 6) -20 +2 +20 na output impedance r out_ measured at dc 0.1 ? r s = 50 ? , c out_ = 15? 10 ms settling time to 0.1% of final value r s = 0 ? , c out_ = 10nf 20 ? 010nf output capacitive load c out_ 50 ? in series with c out_ 025f input-referred noise at 1khz 20 nv/ hz voltage gain error -0.20 +0.02 +0.20 % max1350/max1352/max1354/max1356 300 -3db bandwidth bw max1351/max1353/max1355/max1357 150 khz input-referred offset voltage v os -0.75 ?.25 +0.75 mv input-referred offset drift ? ?/? common-mode rejection ratio cmrr measured at dc (note 6) 96 db power-supply rejection ratio psrr measured at dc (note 6) 96 db clamp to zero delay clamp_ driven high 1 s clamp to zero switch impedance r clamp 300 500 ? output short-circuit current i sc 1s, sinking or sourcing ?0 ma power-up time to 0.1% of final value 100 ? saturation recovery time 100 ? shutdown recovery time 100 ? maximum power-on transient ?00 mv digital inputs ( shdn , clamp1, clamp2, cal1, cal2) input high voltage v ih 2.4 v input low voltage v il 0.4 v input hysteresis 0mv input bias current -1.0 ?.1 +1.0 a input capacitance 5.0 pf power supplies drive supply voltage v dd v ss = drgnd 4.75 11.00 v drive supply current i dd (note 7) 4.75 7 ma sense supply voltage range v cs+ 532v
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers 4 _______________________________________________________________________________________ electrical characteristics (continued) (v dd = +10v, v ss = 0v, v cs_+ = 30v, c outcs1 , c outcs2 to csgnd = 10pf, c out1 , c out2 to drgnd = 10nf, t a = -40? to +85?, unless otherwise noted. typical values are at t a = +25?.) parameter symbol conditions min typ max units v outcs_ = 200mv 135 195 sense supply current i cs+ v outcs_ = 2.5v 320 450 ? v dd to v ss voltage range v ds 4.75 11.00 v v ss to drgnd voltage range v sg -1 0 v shdn = drgnd (note 8), t a = +25? 0.1 1 shutdown supply current t a = +85? 2.5 10 ? note 1: input deliberately offset by 3mv for nulling purposes. note 2: the output does not reverse phase when overdriven. v sense = v cs+ - v cs- . note 3: total output voltage error = ((v outmeasured - v out-ideal ) / v out-ideal ) x 100% total output voltage error = ((total offset voltage error + total gain voltage error) / v out-ideal ) x 100% where: v out-ideal = (v sense + 3mv) x 2 for the max1350/max1351 v out-ideal = v sense x 2 for the max1352/max1353 v out-ideal = v sense x 10 for the max1354/max1355 v out-ideal = (v sense + 3mv) x 10 for the max1356/max1357 note 4: for the max1350?ax1353, the minimum cs_+ to outcs_ voltage is 2.494v. for the max1354?ax1357, the minimum cs_+ to outcs_ voltage is 2.75v. note 5: adding a capacitor (c outcs ) to csgnd at outcs_ can limit the bandwidth below that of the sense amplifier by introducing a pole at f pole , where f pole = 1 / (2 x r outcs x c outcs ). for example, for r outcs_ = 12.5k ? , adding a 100pf capacitor introduces a pole at 127khz (?0%). this can be of benefit if noise needs to be restricted or the signal digitized. note 6: for the max1350/max1352/max1354/max1356, the voltage input range is 0.18v v in v dd / 2. for the max1351/max1353/ max1355/max1357, the voltage input range is 0.18v v in v dd / 4. note 7: measured with all the digital inputs low, except shdn , and no load. note 8: all digital inputs low. any digital input consumes current if left in a high state. supply current vs. supply voltage max1350 toc01 v dd (v) i dd (ma) 10 9 5 6 7 8 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 3.50 411 supply current vs. temperature max1350 toc02 temperature ( c) i dd (ma) 60 35 10 -15 4 5 6 7 3 -40 85 sense-amplifier total output voltage error vs. supply voltage max1350 toc03 v dd (v) total output voltage error (%) 10 9 7 8 6 5 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0 411 typical operating characteristics (v dd = 10v, v ss = 0, v cs+ = 30v, v sense = 100mv, t a = +25?, unless otherwise noted.)
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers _______________________________________________________________________________________ 5 sense-amplifier total output voltage error vs. sense voltage max1350 toc04 v sense (v) total output voltage error (%) 1.00 0.75 0.50 0.25 0 1 2 3 4 -1 0 1.25 sense-amplifier total output voltage error vs. common-mode voltage max1350 toc05 v cm (v) total output voltage error (%) 30 25 20 15 10 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0 5 sense-amplifier total output voltage error vs. temperature max1350 toc06 temperature ( c) total output voltage error (%) 60 35 10 -15 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 -0.5 -40 85 sense-amplifier transient response max1350 toc07 0 0 v outcs_ 1v/div v sense 1v/div 100 s/div sense-amplifier gain vs. frequency max1350 toc08 frequency (hz) gain (db) 1m 100k 10k 1k -15 -10 -5 0 5 10 -20 100 10m drive-amplifier offset voltage vs. temperature max1350 toc09 temperature ( c) offset voltage ( v) 60 35 10 -15 100 150 200 250 300 350 50 -40 85 drive-amplifier gain error vs. temperature max1350 toc10 temperature ( c) gain error (%) 60 35 -15 10 0.005 0.010 0.015 0.020 0.025 0.030 0.035 0.040 0 -40 85 drive-amplifier transient response max1350 toc11 0 0 v out_ 5v/div v in 5v/div 100 s/div drive-amplifier gain vs. frequency max1350 toc12 frequency (hz) gain (db) 1m 100k 10k 1k -15 -10 -5 0 5 10 -20 100 10m typical operating characteristics (continued) (v dd = 10v, v ss = 0, v cs+ = 30v, v sense = 100mv, t a = +25?, unless otherwise noted.)
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers 6 _______________________________________________________________________________________ pin description pin max1350 max1351 max1356 max1357 max1352 max1355 name function 1 1, 2, 8 n.c. no connection. not internally connected. 2 cal1 offset calibration digital input 1. drive cal1 high to short cs1- to cs1+ for input offset nulling. drive cal1 low for normal operation. 33 shdn shutdown digital input. drive shdn low to place device in low-power shutdown. drive shdn high for normal operation. 4 4 outcs1 current-sense amplifier voltage output 1. v outcs1 = a s x (v cs1+ - v cs1- ). 5 5 in1 drive amplifier 1 input 6 6 in2 drive amplifier 2 input 7 7 outcs2 current-sense amplifier voltage output 2. v outcs2 = a s x (v cs2+ - v cs2- ). 8 cal2 offset calibration input 2. drive cal2 high to short cs2- to cs2+ for input offset nulling. drive cal2 low for normal operation. 9 9 csgnd current-sense ground. ground reference for the current-sense amplifier outputs. 10 10 drgnd drive amplifier ground. ground reference for the drive amplifier outputs and digital inputs. 11 11 v ss negative drive power input. bypass with a 0.1? capacitor to drgnd. 12 12 v dd positive drive power input. bypass with a 0.1? capacitor to drgnd. 13 13 clamp2 output 2 clamp control input. drive clamp2 high to clamp out2 to drgnd. drive clamp2 low for normal operation. 14 14 cs2+ current-sense positive input 2/sense-amplifier power input. cs2+ is the power connection to the external sense resistor and supplies power to the sense amplifier. for normal operation of the max1350?ax1357, cs1+ and cs2+ must both be in the specified common-mode range. 15 15 cs2- current-sense negative input 2. cs2- is the load connection to the external sense resistor. see the typical operating circuit. 16 16 out2 drive amplifier 2 output. v out2 = a d x v in2 . 17 17 out1 drive amplifier 1 output. v out1 = a d x v in1 . 18 18 cs1- current-sense negative input 1. cs1- is the load connection to the external sense resistor. see the typical operating circuit. 19 19 cs1+ current-sense positive input 1/sense-amplifier power input. cs1+ is the power connection to the external sense resistor and supplies power to the sense amplifier. for normal operation of the max1350?ax1357, cs1+ and cs2+ must be in the specified common-mode range. 20 20 clamp1 output 1 clamp control input. drive clamp1 high to clamp out1 to drgnd. drive clamp1 low for normal operation.
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers _______________________________________________________________________________________ 7 a s a d a d a s max1350 max1351 max1356 max1357 outcs1 in1 clamp1 in2 clamp2 outcs2 cs1+ cs1- cal1 out1 out2 cs2+ cs2- cal2 shdn v dd v ss csgnd drgnd a s : sense-amplifier voltage gain a s = 2 for the max1350/max1351 a s = 10 for the max1356/max1357 a d : drive-amplifier voltage gain a d = 2 for the max1350/max1356 a d = 4 for the max1351/max1357 a s a d a d a s max1352?ax1355 outcs1 in1 clamp1 in2 clamp2 outcs2 cs1+ cs1- out1 out2 cs2+ cs2- shdn v dd v ss csgnd drgnd a s : sense-amplifier voltage gain a s = 2 for the max1352/max1353 a s = 10 for the max1354/max1355 a d : drive-amplifier voltage gain a d = 2 for the max1352/max1354 a d = 4 for the max1353/max1355 functional diagrams
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers 8 _______________________________________________________________________________________ detailed description each of the max1350?ax1357 parts includes two high-side current-sense amplifiers and two drive ampli- fiers. the current-sense amplifiers are unidirectional and provide a 5v to 32v input common-mode range. for normal operation, the device requires a 4.75v to 11v supply at v dd and a 5v to 32v supply at cs1+ and cs2+. both cs1+ and cs2+ must be within the speci- fied common-mode range for proper operation of all amplifiers. the cs1+ and cs2+ inputs function as power inputs to the sense amplifier and each typically draws 320? with a full-scale sense voltage (see the electrical characteristics ). current-sense amplifiers the sense amplifiers measure the load current, i load , through an external sense resistor, r sense , between the cs_+ and cs_- inputs. the sense voltage range (v sense = v cs _ + - v cs _ - ) is between 2mv and 1250mv for the max1350?ax1353 and between 2mv and 500mv for the max1354?ax1357. the sense ampli- fiers provide a voltage output at outcs1 and outcs2, where the output voltage is determined by the following equation: v outcs _ = a s x (v cs _ + - v cs _ - ) a s a d outcs1 in1 clamp2 cs1+ cs1- out1 shdn v dd in2 clamp1 cal1* cal2* max1350?ax1357 v ss csgnd drgnd cs2- cs2+ r sense 5v to 32v out2 variable load i load load control adc dac c 5v 10v 0.1 f *max1350/max1351/max1356/max1357 only figure 1. typical operating circuit
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers _______________________________________________________________________________________ 9 offset calibration (cal1 and cal2) the max1350/max1351/max1356/max1357 offer a typical input offset voltage of 3mv for systems requiring offset nulling. for the max1352?ax1355, where the nominal input offset voltage is 0, only positive offset is detectable since the output cannot go below ground. with the deliberate input offset voltage of 3mv, the out- put offset voltage (a s x 3mv) can be easily nulled using external circuitry. nulling out the sense-amplifier offset significantly improves the total output voltage error at sense voltages below 100mv. drive cal_ high to short cs_+ and cs_- together to measure the offset at outcs_. drive cal_ low for nor- mal operation. the width of the cal_ pulse should be greater than 40?. sample outcs1/outcs2 until 40? after the digital inputs have gone low. drive amplifiers the max1350?ax1357 include dual drive amplifiers with an internally fixed gain (a d ) of 2 for the max1350/max1352/max1354/max1356 and 4 for the max1351/max1353/max1355/max1357. output clamp to drgnd (clamp1 and clamp2) the max1350?ax1357 offer an output clamp feature for the drive amplifiers. drive clamp1 and clamp2 high to clamp out1 and out2 respectively to drgnd. the clamp_ high to out_ low delay is typically 1? (see the electrical characteristics ). drive clamp1 and clamp2 low for normal operation. power-on reset after a power-on reset, the max1350?ax1357 are in shutdown regardless of the state of shdn . toggle shdn (provide a low-to-high transition) to take the device out of shutdown mode. shdn then continues to function as a level-triggered, active-low input. drive shdn high for normal operation. digital inputs ( shdn , clamp1, clamp2, cal1, cal2) drive the digital inputs with 3.3v or 5v logic. the absolute maximum voltage that can be applied to these inputs is 6v. unused devices figure 1 illustrates an example in which the max1350?ax1357 facilitate current control to a vari- able load. if using only one of the current-sense ampli- fiers, connect cs_+ and cs_- of the unused amplifier to the same point as cs_+ of the active sense amplifier. this ensures that the unused cs_+ input resides in the common-mode range for proper operation, and the amplifier output is zero since cs_+ and cs_- are short- ed together. for an unused drive amplifier, connect the input (in_) to drgnd and drive the associated clamp_ high to force the outputs to drgnd. applications information application example?ase-station ldmos bias the max1350?ax1357 can be used to sense and control the drain current in an ldmos transistor in base-station applications (see figure 2). as the tem- perature of the ldmos changes, the gate-to-source threshold voltage changes, resulting in an increase or decrease in drain current if the gate bias voltage is fixed. the max1350?ax1357 allow for a software- controllable scheme to sense the ldmos drain current and adjust the gate bias voltage to compensate for the temperature shift. the circuit in figure 2 can control up to eight ldmos transistors when using four max1350?ax1357 devices. the max1230 is a 12-bit, 16-channel adc, which processes up to eight drain current measurements and eight ldmos temperature measurements (one for each transistor). the max5306 is a 12-bit, octal dac, which controls up to eight gate-drive amplifiers. the digital inputs are controlled using a 5v microcontroller. current-sense resistor selection select r sense based on the following criteria: 1) voltage loss: a high r sense value causes the power-source voltage to degrade through i 2 r loss. for minimal voltage loss, use the lowest possible r sense value. 2) accuracy: a high r sense value allows lower cur- rents to be measured more accurately. this is because offsets become less significant when the sense voltage is larger. 3) efficiency and power dissipation: at high current levels, the i 2 r losses in r sense can be significant. take this into consideration when choosing the resistor value and its power-dissipation rating. also, the sense resistor? value can drift if it is allowed to heat up excessively. 4) inductance: keep inductance low if the current being sensed has a large high-frequency component. wire- wound resistors have the highest inductance, while metal film is somewhat better. low-inductance metal- film resistors are also available. instead of being spi- ral wrapped around a core, as in metal-film or wire-wound resistors, low-inductance metal film resis- tors are a straight band of metal and are available in values under 1 ? .
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers 10 ______________________________________________________________________________________ a s a s a d a d v dd r sense r sense adc adc adc ldmos 1 temperature ldmos 2 temperature adc c 5v 10v 32v 0.1 f max1350?ax1357 max1230 max5306 outcs1 outcs2 in1 rf in rf out clamp1 in2 clamp2 cal1* cal2* shdn cs1+ cs1- c f ** c f ** r f ** out1 out2 cs2+ cs2- csgnd drgnd v ss ldmos 1 dac dac r f ** rf in rf out ldmos 2 *max1350/max1351/max1356/max1357 only **select r f and c f based on desired filter cutoff frequency, where f cutoff = 1 / (2 r f x c f ). limit r f to 100 ? to minimize offset errors. figure 2. ldmos biasing application
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers ______________________________________________________________________________________ 11 5) cost: if the cost of r sense is an issue, it may be preferable to use an alternative solution, as shown in figure 3. this solution uses the pc board traces to create a sense resistor. because of the inaccura- cies of the copper resistor, the full-scale current value must be adjusted with a potentiometer. also, copper? resistance temperature coefficient is rela- tively high (approximately 0.4%/?). using a pc board trace to create a sense resistor in figure 3, assume that the load current to be mea- sured is 10a using a 0.3in-wide, 2oz copper trace. the resistance of 0.1in-wide, 2oz (70? thickness) copper is 30m ? /ft. for 10a, select r sense = 5m ? for a 50mv drop at full scale. this resistor requires approximately 2in of 0.1in-wide copper trace. high-current measurement the max1350?ax1357 can achieve high-current measurements by using low-value sense resistors, which can be paralleled to further increase the current- sense limit (see figure 3). as an alternative, pc board traces can be adjusted over a wide range. minimize the trace length and ensure accurate sensing with kelvin connections (see figure 4). power supply bypassing and layout considerations bypass v dd and v ss to drgnd each with at least a 0.1? ceramic capacitor as close to pins as possible to isolate the device for supply-voltage transients. bypass cs1+ and cs2+ to csgnd each with at least a 0.1? ceramic capacitor as close to the pins as possible. for optimum performance, separate the csgnd and drgnd planes. use a star-ground configuration and connect the two ground planes together through a low- value resistor. chip information transistor count: 804 process: bicmos max1350?ax1357 input load r sense 0.3in copper 0.1in copper 0.3in copper cs_+ cs_- figure 3. using pc board trace for r sense sense resistor high-current path max1350?ax1357 figure 4. kelvin connects for sense resistors selector guide part sense- amplifier gain (a s ) sense-amplifier input offset voltage (mv) drive- amplifier gain (a d ) max1350 2 3 2 max1351 2 3 4 max1352 2 0 2 max1353 2 0 4 max1354 10 0 2 max1355 10 0 4 max1356 10 3 2 max1357 10 3 4
max1350?ax1357 dual, high-side, current-sense amplifiers and drive amplifiers 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. package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .) tssop4.40mm.eps package outline, tssop 4.40mm body 21-0066 1 1 g

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