Micropower, Single-Supply, MAX4194MAX4197 Rail-to-Rail, Precision Instrumentation Amplifiers General Description Benefits and Features The MAX4194 is a variable-gain precision instrumenta- Low Power Consumption Is Ideal for Remote-Sensing tion amplifier that combines Rail-to-Rail single-supply and Battery-Powered Applications operation, outstanding precision specifications, and a +2.7V Single-Supply Operation high gain bandwidth. This amplifier is also offered in Low Power Consumption three fixed-gain versions: the MAX4195 (G = +1V/V), the 93A Supply Current MAX4196 (G = +10V/V), and the MAX4197 (G = 8A Shutdown Current +100V/V). The fixed-gain instrumentation amplifiers fea- (MAX4195/MAX4196/MAX4197) ture a shutdown function that reduces the quiescent Precision Specifications Maximize Sensor Peformance current to 8A. A traditional three operational amplifier High Common-Mode Rejection: 115dB (G = +10V/V) configuration is used to achieve maximum DC precision. Input Common-Mode Range Extends 200mV Below The MAX4194MAX4197 have rail-to-rail outputs and GND inputs that can swing to 200mV below the negative rail Low 50V Input Offset Voltage (G +100V/V) and to within 1.1V of the positive rail. All parts draw only Low 0.01% Gain Error (G = +1V/V) 93A and operate from a single +2.7V to +7.5V supply 250kHz -3dB Bandwidth (G = +1V/V, MAX4194) or from dual 1.35V to 3.75V supplies. These amplifiers Rail-to-Rail Outputs are offered in 8-pin SO packages and are specified for the extended temperature range (-40C to +85C). Ordering Information See the MAX4198/MAX4199 data sheet for single-supply, PART TEMP RANGE PIN-PACKAGE precision differential amplifiers. MAX4194ESA -40C to +85C 8 SO MAX4195ESA -40C to +85C 8 SO MAX4196ESA -40C to +85C 8 SO Applications MAX4197ESA -40C to +85C 8 SO Medical Equipment Thermocouple Amplifier Selector Guide 420mA Loop Transmitters PART SHUTDOWN GAIN (V/V) CMRR (dB) Data-Acquisition Systems MAX4194 No Variable 95 (G = +1V/V) Battery-Powered/Portable Equipment MAX4195 Yes +1 95 Transducer Interface MAX4196 Yes +10 115 MAX4197 Yes +100 115 Bridge Amplifier Pin Configurations TOP VIEW RG- 1 8 RG+ REF 1 8 SHDN IN- 2 7 V IN- 2 7 V CC CC MAX4194 MAX4195 MAX4196 IN+ 3 6 OUT IN+ 3 6 OUT MAX4197 V 4 5 REF V 4 5 FB EE EE SO SO Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. 19-1468 Rev 2 5/15Micropower, Single-Supply, MAX4194MAX4197 Rail-to-Rail, Precision Instrumentation Amplifiers Supply Voltage (V to V )..................................................+8V Operating Temperature Range ...........................-40C to +85C CC EE All Other Pins .................................. (V + 0.3V) to (V - 0.3V) Junction Temperature......................................................+150C CC EE Current into Any Pin..........................................................30mA Storage Temperature Range .............................-65C to +150C Output Short-Circuit Duration (to V or V )........... Continuous Lead Temperature (soldering, 10s) ................................ +300C CC EE Continuous Power Dissipation (T = +70C) A 8-Pin SO (derate 5.9mW/C above +70C).................. 471mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (V = +5V, V = 0V, R = 25k tied to V /2, V = V /2, T = T to T , unless otherwise noted. Typical values are at CC EE L CC REF CC A MIN MAX T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Single supply 2.7 7.5 Supply Voltage Range V Inferred by PSR test V CC Dual supplies 1.35 3.75 Quiescent Current I V = V = V /2, V = 0V 93 110 A CC IN+ IN- CC DIFF Shutdown Current I I = V , MAX 4195 /MAX 41 96/MAX 4197 only 8 12 A SHDN SHDN IL G = +1V/V, V = V /2, T = +25C 100 450 CM CC A G = +10V/V, V = V /2, T = +25C 75 225 CM CC A G = +100V/V, V = V /2, T = +25C 50 225 CM CC A G = +1000V/V, V = V /2, T = +25C 50 CM CC A Input Offset Voltage V V OS G = +1V/V, V = V /2, T = T to T 100 690 CM CC A MIN MAX G = +1V /V, V = V /2, T = T to T 75 345 C M C C A M IN M AX G = +10 0V/V , V = V /2, T = T to T 50 345 C M C C A M IN M AX G = +10 00V/V , V = V /2, T = T to T 50 C M C C A M IN M AX G = +1V/V 1.0 4.0 Input Offset Voltage Drift TC V/C VOS (Note 1) G +10V/V 0.5 2.0 Differential 1000 Input Resistance R V = V /2 M IN CM CC Common mode 1000 Differential 1 Input Capacitance C V = V /2 pF IN CM CC Common mode 4 Input Voltage Range V Inferred from CMR test V - 0.2 V - 1.1 V IN EE CC G = +1V 66 78 V = V - 0.2V C M E E to V - 1.1V, C C G = +10V 80 94 T = + 25C, A DC Common-Mode R = 1k ( N ote 1) S G = +100V 86 99 Rejection CMR dB DC G = +1V 60 78 V = V - 0.2V C M E E to V - 1.1V , C C G = +10V 74 94 T = T to T , A M IN M AX R = 1k, ( N ote 1) S G = +100V 77 99 www.maximintegrated.com Maxim Integrated 2