Features and Benefits
- 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
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.
- 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
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
MAX4236 Reliability Data1/12/2023118K
Precision Current-Transmitter/Source-Sink Calibrator Has Wide Compliance Range1/31/2011
Bipolar DC-Voltage Detector Offers Sensitivity and Precision1/26/2011
Hot-Swap Controller with Calibration Input Can Accurately Monitor Two Load Currents1/20/2011
Precision Current-Sink/Source Circuits Configure as Mirrors or Amplifiers11/11/2010
PWM-Controlled 4–20mA Transmitter Is Galvanically Isolated8/5/2010
IR-Link Temperature Sensor Allows Isolation of the Temp Sensor3/14/2005
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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