SOT23, Very High Precision, 3V/5V Rail-to-Rail Op Amps

Please check latest availability status for a specific part variant.


The MAX4236/MAX4237 are high-precision op amps that feature an exceptionally low offset voltage and offset voltage temperature coefficient without using any chopper techniques. The MAX4236 and MAX4237 have a typical large-signal, open-loop voltage gain of 120dB. These devices have an ultra-low input-bias current of 1pA. The MAX4236 is unity-gain stable with a gain-bandwidth product of 1.7MHz, while the MAX4237 is stable for closed-loop gains greater than 5V/V with a gain-bandwidth product of 7.5MHz. Both devices have a shutdown function in which the quiescent current is reduced to less than 0.1µA, and the amplifier output is forced into a high-impedance state.

The input common-mode range of the MAX4236/MAX4237 extends below the negative supply range, and the output swings rail-to-rail . These features make the amplifiers ideal for applications with +3V or +5V single power supplies. The MAX4236/MAX4237 are specified for the extended temperature range (-40°C to +85°C) and are available in tiny SOT23, µMAX®, and SO packages. For greater accuracy, the A grade µMAX and SO packages are tested to guarantee 20µV (max) offset voltage at +25°C and less then 2µV/°C drift.
MAX4236, MAX4237: Typical Application Circuit MAX4236, MAX4237: Typical Application Circuit Enlarge+

Key Features

  • Ultra-Low Offset Voltage
    • 20µV (max) at +25°C (Grade A)
    • 50µV (max) at +25°C (Grade B, 6-Pin SOT23)
  • Ultra-Low Offset Voltage Drift
    • 2µV/°C (max) (Grade A)
    • 4.5µV/°C (max) (Grade B, 6-Pin SOT23)
    • 5.5µV/°C (max) (6-Pin SOT23)
  • Ultra-Low 1pA Input Bias Current
  • High Open-Loop Voltage Gain: 110dB (min) (RL = 100kΩ)
  • Compatible with +3V and +5V Single-Supply Power Systems
  • Ground Sensing: Input Common-Mode Range Includes Negative Rail
  • Rail-to-Rail Output Swing into a 1kΩ Load
  • 350µA Quiescent Current
  • Gain-Bandwidth Product
    • 1.7MHz (MAX4236, AV = 1V/V)
    • 7.5MHz (MAX4237, AV = 5V/V)
  • 200pF Capacitive Load Handling Capability
  • Shutdown Mode: 0.1µA Quiescent Current, Places Output in a High-Impedance State
  • Available in Space-Saving SOT23 and µMAX Packages


  • Automatic Test Equipment (ATE)
  • Battery-Powered Applications
  • Cardiac Monitor
  • Displays: Industrial, Front Panel, and Instrumentation
  • Electrochemical Sensors
  • Industrial: Process Measurement and Control
  • Instrumentation Amplifiers
  • Panel Meters
  • Piezoelectric Sensors
  • Power Meters
  • Programmable Logic Controllers (PLCs)
  • Strain Gauges
  • Thermocouple Amplifiers

See parametric specs for Operational Amplifiers (175)

Part NumberAmps.Rail to RailVSUPPLY (Total)
ICC per Amp.
Low Input Bias CMOS InputsInput IBIAS
Unity Gain BW
Slew Rate
minmaxtypmaxtyptypmaxtyptyp<See Notes
MAX4236A 1Output Only2.45.535020103120Yes0.51.70.314
$1.22 @1k
MAX4237A 207.51.3
$1.00 @1k
MAX4236 501.70.3
SOIC (N)/8
$1.04 @1k
MAX4237 507.51.3
SOIC (N)/8
$1.11 @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.
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 >


Related Resources

Quad Transimpedance Amplifier with Input Current Clamp and Multiplexer for LiDAR

  • AEC-Q100
  • Enables ASIL Compliance (FMEDA Available Upon Request)
  • Internal Multiplexer

Dual 280ps High-Speed Comparator, Ultra-Low Dispersion with LVDS Outputs

  • Fast Propagation Delay: 280ps, Typ
  • Low Overdrive Dispersion: 25ps (VOD = 10mV to 1V)
  • Supply Voltage 2.7V to 3.6V