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

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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 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.
MAX4194, MAX4195, MAX4196, MAX4197: Pin Configurations MAX4194, MAX4195, MAX4196, MAX4197: Pin Configurations Enlarge+

Key Features

  • Low Power Consumption Is Ideal for Remote-Sensing and Battery-Powered Applications
    • +2.7V Single-Supply Operation
    • Low Power Consumption
      • 93µA Supply Current
      • 8µA Shutdown Current (MAX4195/MAX4196/MAX4197)
  • Precision Specifications Maximize Sensor Peformance
    • 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

See parametric specs for Instrumentation/Difference Amplifiers (11)

Part NumberArchitectureAmps.VCMVRRail to RailAV
ICC per Amp.
ICC per Amp.
Unity Gain BW
Slew Rate
Noise Spec'd @Low Power ShutdownOper. Temp.
to Neg. Railminmaxtypmaxmaxtyptypmaxtyptyp<See Notes
MAX4194 Classic 3 Op. Amp.1NoOutput Only1 to 100002.77.50.0930.11450115120200.250.06VEE+0.2 to VCC-1.1720.110kHzNo-40 to +85
SOIC (N)/8
$2.43 @1k
MAX4195 1950.22VEE-0.2 to VCC-1.172
SOIC (N)/8
$2.88 @1k
MAX4196 101150.34VEE+0.2 to VCC-1.131
SOIC (N)/8
$2.43 @1k
MAX4197 1001150.003VEE+0.2 to VCC-1.18.7
SOIC (N)/8
$2.71 @1k

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.
Product Reliability Reports: MAX4194.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


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