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The MAX4194 is a variable-gain precision instrumentation amplifier that combines Rail-to-Rail® single-supply operation, outstanding precision specifications, and a high gain bandwidth. This amplifier is also offered in three fixed-gain versions: the MAX4195 (G = +1V/V),the MAX4196 (G = +10V/V), and the MAX4197 (G = +100V/V). The fixed-gain instrumentation amplifiers feature a shutdown function that reduces the quiescent current to 8A. A traditional three operational amplifier configuration is used to achieve maximum DC precision.
The MAX4194MAX4197 have rail-to-rail outputs and inputs that can swing to within 200mV of the negative rail and to within 1.1V of the positive rail. All parts draw only 93A and operate from a single +2.7V to +7.5V supply or from dual ±1.35V to ±3.75V supplies. These amplifiers are offered in 8-pin SO packages and are specified for the extended temperature range (-40°C to +85°C).
See the MAX4198/MAX4199 data sheet for single-supply, precision differential amplifiers.
MAX4195 Maximum Ratings
Supply Voltage (VCC to VEE)..................................................+8V All Other Pins .................................. (VCC + 0.3V) to (VEE - 0.3V) Current into Any Pin........................................................±30mA Output Short-Circuit Duration (to VCC or VEE).......... Continuous Continuous Power Dissipation (TA = +70°C) SO (derate 5.9mW/°C above +70°C).......................... 471mW Operating Temperature Range .......................-40°C to +85°C Junction Temperature....................................................+150°C Storage Temperature Range .........................-65°C to +150°C Lead Temperature (soldering, 10sec) .......................... +300°C
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.
MAX4195 Features
` +2.7V Single-Supply Operation ` Low Power Consumption 93A Supply Current 8A Shutdown Current (MAX4195/96/97) ` High Common-Mode Rejection: 115dB (G = +10V/V) ` Low 50V Input Offset Voltage (G +100V/V) ` Low ±0.01% Gain Error (G = +1V/V) ` 250kHz -3dB Bandwidth (G = +1V/V, MAX4194) ` Rail-to-Rail Outputs