INA117AM

Overview

The INA117AM is a precision monolithic instrumentation amplifier manufactured by Texas Instruments. It features a high common-mode voltage range, allowing operation with input signals significantly exceeding the supply rails. The device provides a fixed gain of 1 V/V and utilizes an internal laser-trimmed resistor network to ensure high accuracy. Key electrical specifications include a maximum supply voltage of 36 V, a slew rate of 2.6 V/µs, and a bandwidth of 200 kHz. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• High common-mode voltage capability allows signal inputs to exceed positive or negative supply voltages.
• Monolithic construction with internal laser-trimmed resistors ensures high precision and stability.
• Fixed unity gain configuration eliminates the need for external gain-setting components.

Applications

• Industrial process control systems requiring isolation from high common-mode potentials.
• Medical equipment involving electrocardiogram (ECG) signal conditioning.
• Data acquisition systems interfacing with sensors in electrically noisy environments.

Procurement Notes

Verify the specific suffix 'AM' against the official datasheet to confirm package type and temperature grade. Confirm current production status as variants may be obsolete. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement.

Selection Notes

Select this component when a fixed unity gain is required alongside high common-mode rejection. Compare performance metrics such as CMRR and offset voltage against alternative models if higher gain flexibility is needed. Verify that the operating temperature range meets the environmental constraints of the target application.

Part Context

This part belongs to the INA117 family of instrumentation amplifiers designed for applications demanding high accuracy and robustness against high common-mode voltages. The family typically includes various package options and temperature grades to suit different industrial and commercial deployment scenarios.

Replacement Considerations

Consult the manufacturer's cross-reference guide for verified substitutes. Ensure any replacement maintains the same pinout, gain configuration, and common-mode voltage limits to avoid circuit redesign.