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MAX4194, MAX4195, MAX4196, MAX4197

Micropower, Single-Supply, Rail-to-Rail, Precision Instrumentation Amplifiers

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Active: In Production.


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 8µA. A traditional three operational amplifier configuration is used to achieve maximum DC precision.

The MAX4194–MAX4197 have rail-to-rail outputs and inputs that can swing to 200mV below the negative rail and to within 1.1V of the positive rail. All parts draw only 93µA 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.

Data Sheet

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Key Features

  • +2.7V Single-Supply Operation
  • Low Power Consumption
    • 93µA Supply Current
    • 8µA Shutdown Current (MAX4195/MAX4196/MAX4197)
  • High Common-Mode Rejection: 115dB (G = +10V/V)
  • Input Common-Mode Range Extends 200mV Below GND
  • Low 50µV 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


  • 4mA to 20mA Loop Transmitters
  • Battery-Powered/Portable Equipment
  • Bridge Amplifier
  • Data Acquisition Systems
  • Medical Equipment
  • Thermocouple Amplifiers
  • Transducer Interface

Key Specifications:

Instrumentation/Difference Amplifiers
Part Number Architecture Amps. VCMVR Rail to Rail AV
ICC per Amp.
ICC per Amp.
Unity Gain BW
Slew Rate
Noise Spec'd @ Low Pwr. Shutdn Oper. Temp.
to Neg. Rail min max typ max max typ typ max typ typ < See Notes
MAX4194  Classic 3 Op. Amp. 1 No Output Only 1 to 10000 2.7 7.5 0.093 0.11 450 115 120 20 0.25 0.06 VEE+0.2 to VCC-1.1 72 0.1 10kHz No -40 to +85 $1.69 @1k
MAX4195  1 95 0.22 VEE-0.2 to VCC-1.1 72 $2.74 @1k
MAX4196  10 115 0.34 VEE+0.2 to VCC-1.1 31 $2.31 @1k
MAX4197  100 115 0.003 VEE+0.2 to VCC-1.1 8.7 $2.58 @1k
See All Instrumentation/Difference Amplifiers (11)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX4194, MAX4195, MAX4196, MAX4197: Pin Configurations
Pin Configurations

More Information

New Product Press Release   1999-05-11 ]

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Information Index

Document Ref.: 19-1468 Rev 1; 2003-10-27
This page last modified: 2009-09-07