INA188IDR

Overview

The INA188IDR is a precision, zero-drift instrumentation amplifier manufactured by Texas Instruments. It features rail-to-rail output capability and supports high-voltage operation with a supply range up to 36 V. The device operates within an extended temperature range of -40°C to +125°C. Key electrical specifications include a maximum input offset voltage of 55 µV, a typical bandwidth of 0.6 MHz, and a minimum common-mode rejection ratio of 84 dB. It utilizes an 8-SOIC package.

Feature Summary

• Zero-drift architecture ensures stable performance over time and temperature variations
• Rail-to-rail output maximizes dynamic range in single-supply applications
• High-voltage support enables direct interfacing with various signal sources

Applications

• Industrial process control sensor conditioning
• Medical equipment signal acquisition
• Strain gauge and load cell measurements

Procurement Notes

Verify the specific suffix 'IDR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 8-SOIC package dimensions align with the target PCB footprint. Ensure the operating environment remains within the specified -40°C to +125°C thermal limits to maintain guaranteed zero-drift performance characteristics.

Selection Notes

Select this component when high DC accuracy and long-term stability are critical requirements. The zero-drift technology eliminates the need for external chopper stabilization circuits. Consider the 36 V supply limit and rail-to-rail output swing when designing the signal chain. Evaluate the 0.6 MHz bandwidth against the required signal frequency response to ensure adequate speed without compromising precision.

Part Context

This part belongs to the INA188 family of precision instrumentation amplifiers from Texas Instruments. It is designed for applications requiring high accuracy and low drift. The ID suffix indicates the SOIC package variant, while the R suffix denotes reel packaging. It serves as a robust solution for replacing traditional instrumentation amplifiers in high-precision measurement systems.

Replacement Considerations

INA188IDRG4 is a verified equivalent variant within the same product line.