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

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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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

Applications/Uses

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

Description

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.

Simplified Block Diagram

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

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .