MAX4462TESA

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4462TESA is a precision instrumentation amplifier from Analog Devices/Maxim Integrated, housed in an 8-pin SO package. It operates on a single supply of 2.85V to 5.25V or dual supplies up to ±2.6V. The device features a fixed gain of 10 (suffix T), a reference input pin for bipolar signal handling, and rail-to-rail output capability. Key electrical parameters include a typical quiescent current of 700µA, a gain-bandwidth product of 2.5MHz, and an input offset voltage of typically 100µV. It offers high common-mode rejection and low noise performance suitable for sensitive measurement applications.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Features a dedicated reference input pin allowing the output voltage to be set relative to an external reference for bipolar operation in single-supply systems.
• Provides factory-trimmed fixed gain accuracy with ±0.1% error tolerance at gains of 1, 10, and 100.
• Delivers rail-to-rail output swing while maintaining ground-sensing capability on the inputs.

Instrumentation, Op Amps, Buffer Amps Applications

• Strain-Gauge Amplifiers
• Transducer Interface
• Precision Low-Side Current Sense
• Low-Noise Microphone Preamplifier

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'TESA' corresponds to the 8-pin SO package and Gain of 10 configuration. Confirm the operating temperature range matches the application requirements, as this variant supports -40°C to +85°C. Ensure the design accounts for the REF pin connection to establish the correct output reference level for bipolar signals.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the MAX4462TESA when a fixed gain of 10 is required alongside the ability to handle bipolar differential inputs using a single power supply. This model is distinct from the MAX4461 series due to its REF pin rather than a shutdown control. It is appropriate for designs needing rail-to-rail output without the complexity of adjustable gain circuits found in the MAX4460.

Instrumentation, Op Amps, Buffer Amps Part Context

This component belongs to the MAX4460/MAX4461/MAX4462 family of low-power, rail-to-rail instrumentation amplifiers. While the MAX4460 allows adjustable gain and the MAX4461 includes a shutdown feature, the MAX4462 is specifically designed for applications requiring a reference input to manage bipolar signal ranges within unipolar supply constraints.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes within the same family include MAX4462UESA (Gain 1) and MAX4462HESA (Gain 100). Cross-family replacements require matching the gain, package type, and supply voltage specifications carefully.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the MAX4462 differ from the MAX4461?

The MAX4462 includes a reference input pin (REF) to set the output voltage for zero differential input, enabling bipolar operation. The MAX4461 lacks this pin but includes a logic-controlled shutdown input instead.

What is the function of the REF pin?

The REF pin sets the output voltage level corresponding to a zero differential input. This allows the amplifier to handle bipolar signals even when powered by a single supply.