INA117BM-3

Overview

The INA117BM-3 is a high common-mode voltage difference amplifier manufactured by Texas Instruments. It features a single channel with a gain of 1 V/V and a gain error of 0.02%. The device operates within a supply voltage range of 10 V to 36 V, consuming 1.5 mA of operating current. Key electrical parameters include a maximum input offset voltage of 1 mV, a common-mode rejection ratio of 86 dB, and a slew rate of 2.6 V/us. The bandwidth is 200 kHz, and it supports a common-mode voltage up to -200 V. It functions in temperatures from -40 C to +85 C and uses a TO-99-8 metal package.

Feature Summary

• Provides high common-mode voltage handling capability for differential signal amplification.
• Delivers precise gain performance with low gain error characteristics.
• Offers high common-mode rejection ratio to minimize noise interference.

Applications

• Industrial process control systems requiring isolated signal measurement
• Medical equipment utilizing high-voltage isolation requirements
• Data acquisition systems needing accurate differential voltage sensing

Procurement Notes

Verify the specific manufacturer origin, as the INA117 series was originally developed by Burr-Brown before its acquisition by Texas Instruments. Confirm that the component matches the exact TO-99-8 metal can package specification. Ensure the part number suffix corresponds to the correct temperature grade and pin configuration for your circuit design requirements.

Selection Notes

Select this component when high common-mode voltage tolerance is required alongside precise differential amplification. The fixed unity gain configuration simplifies circuit design for applications where external gain setting resistors are undesirable. Consider the through-hole mounting style and metal package thermal properties during PCB layout planning.

Part Context

This device belongs to the INA117 family of precision difference amplifiers. It is designed for applications demanding high accuracy and robustness against high common-mode potentials. The family typically includes variants with different packages and temperature ranges to suit various industrial and scientific instrumentation needs.

Replacement Considerations

Check for direct equivalents such as the INA117BM or other INA117 series variants with compatible pinouts and electrical specifications. Verify that any substitute maintains the same TO-99-8 package dimensions and metal construction for proper mechanical fit.