INA128HD

Overview

The INA128HD is a high-temperature precision low-power instrumentation amplifier manufactured by Texas Instruments. It operates within an extended temperature range of -55°C to 175°C and is housed in an 8-pin SOIC (D) package. The device features a gain bandwidth product of 1.3 MHz, ensuring accurate signal amplification across various frequencies. Designed for robust performance in demanding thermal environments, it maintains low quiescent current characteristics typical of the INA12x-HT series.

Feature Summary

• Extended operational temperature capability up to 175°C
• Precision instrumentation amplifier architecture
• Low power consumption design

Applications

• High-temperature industrial sensor interfaces
• Aerospace and defense instrumentation systems
• Harsh environment data acquisition circuits

Procurement Notes

Verify component authenticity through authorized distributors as the INA128HD is scheduled for obsolescence. Confirm package integrity and marking accuracy upon receipt. Check latest manufacturer notices for end-of-life timelines and potential supply constraints before finalizing procurement plans.

Selection Notes

Select this component when operation above standard commercial temperatures is required. Ensure system design accommodates the SOIC package footprint. Verify that the 1.3 MHz bandwidth meets application signal requirements. Consider alternative available parts if long-term supply stability is critical due to discontinuation status.

Part Context

This part belongs to the INA12x-HT family of high-temperature instrumentation amplifiers from Texas Instruments. It shares core functionality with other variants in the series but is specifically rated for extreme thermal conditions. The HD suffix denotes the specific SOIC package configuration and high-temperature grade classification within the broader product line.

Replacement Considerations

Check for direct pin-compatible substitutes from Texas Instruments or other manufacturers offering equivalent high-temperature ratings. Verify that any replacement maintains the 1.3 MHz bandwidth and low power specifications. Consult official obsolescence notices for recommended next-step components.