INA117BM

Overview

The INA117BM is a high common-mode voltage differential amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 10 V to 36 V and draws 1.5 mA of operating current. The device features a gain of 1 V/V with a gain error of 0.02%. Key electrical specifications include a slew rate of 2.6 V/us, a common-mode rejection ratio (CMRR) of 86 dB, and an input offset voltage of 1 mV. It supports a common-mode voltage up to -200 V and has a 3dB bandwidth of 200 kHz. The component is housed in a TO-99-8 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Supports high common-mode voltages up to -200 V for robust signal conditioning
• Provides precise amplification with low gain error and high common-mode rejection
• Operates on dual power supplies within a wide voltage range

Applications

• Industrial process control systems requiring isolation from high common-mode potentials
• Data acquisition circuits handling signals with large DC offsets
• Medical equipment signal processing where safety isolation is critical

Procurement Notes

Verify the specific suffix 'BM' against the manufacturer's latest datasheet to confirm pinout and material compliance. Check for End-of-Life status or obsolescence notices as availability may be limited. Ensure the TO-99-8 metal can package fits the mechanical constraints of the design. Confirm RoHS compliance details directly with the supplier documentation.

Selection Notes

Select this component when the application requires handling input signals with very high common-mode voltages that exceed standard operational amplifier limits. The fixed unity gain configuration simplifies circuit design for applications needing direct differential-to-single-ended conversion without external precision resistors. Consider the TO-99-8 package size and through-hole mounting requirements during PCB layout.

Part Context

The INA117 belongs to a family of instrumentation amplifiers designed for high common-mode voltage applications. Unlike standard op-amps, it integrates precision laser-trimmed resistors internally to maintain accuracy. The BM variant specifically denotes the metal can package version, offering superior shielding and thermal performance compared to plastic packages.

Replacement Considerations

INA117P: Alternative DIP package version with similar electrical characteristics but different physical footprint.