INA117SM

Overview

The INA117SM is a high common-mode voltage difference amplifier manufactured by Burr-Brown, now part of Texas Instruments. It is designed for applications requiring precise differential signal processing in the presence of high common-mode potentials. The device utilizes a monolithic integrated circuit architecture to provide stable gain and low offset characteristics. It is housed in an 8-pin metal can package (TO-99), ensuring robust performance in demanding environments. This component serves as a specialized operational amplifier solution for industrial and scientific instrumentation where standard amplifiers may fail due to common-mode voltage limitations.

Feature Summary

• Capable of handling high common-mode voltages while maintaining accurate differential amplification
• Utilizes a monolithic integrated circuit design for consistent performance
• Housed in a durable metal can package suitable for harsh environments

Applications

• Industrial process control systems
• Scientific instrumentation
• Medical equipment requiring isolated signal measurement

Procurement Notes

Verify the manufacturer status carefully, as Burr-Brown was acquired by Texas Instruments. Confirm whether the specific lot date code aligns with current production or if it represents a discontinued legacy stock. Ensure the TO-99 package variant matches the required pinout and mechanical specifications for your PCB layout. Cross-reference the exact suffix to confirm material composition and environmental compliance standards.

Selection Notes

Select this component when the application demands a difference amplifier that can tolerate input signals significantly higher than the supply rails. Evaluate the need for a hermetic metal package versus plastic alternatives based on environmental exposure. Consider the availability constraints given its historical discontinuation status from the original manufacturer. Verify that the gain configuration requirements match the internal resistor network capabilities of this specific model.

Part Context

The INA117 series belongs to the family of high-performance difference amplifiers originally developed by Burr-Brown Corporation. Following the acquisition by Texas Instruments, these products are managed within TI's precision analog portfolio. The SM designation typically indicates a specific package type and testing grade. These devices were engineered to replace discrete resistor networks, offering improved matching and temperature stability for critical measurement applications.

Replacement Considerations

Public records indicate the INA117SM is listed among discontinued products. Potential substitutes include other high common-mode voltage difference amplifiers from the same lineage, such as the INA114 or INA116, provided they meet the specific voltage and package requirements. Verification of functional equivalence and pin compatibility is essential before transitioning to alternative part numbers.