INA128U

Overview

The INA128U is a precision, low-power instrumentation amplifier manufactured by Texas Instruments. It features a single circuit in an 8-SOIC surface-mount package. Key electrical specifications include a supply current of 700 µA, a gain bandwidth product of 1.3 MHz, and a slew rate of 4 V/µs. The device supports a maximum supply voltage of 36 V and operates within a temperature range of -40°C to 85°C. It offers high common-mode rejection ratios and low input bias current for accurate signal conditioning.

Feature Summary

• Precision instrumentation amplifier architecture
• Low power consumption design
• High common-mode rejection capability

Applications

• Medical ECG signal processing
• Industrial process control systems
• Strain gauge and bridge sensor interfaces
• Data acquisition systems

Procurement Notes

Verify the specific ordering suffix and packaging configuration against the manufacturer's latest documentation. Ensure compatibility with required operating temperatures and supply voltage ranges before integration into final designs.

Selection Notes

Select this component for applications requiring low power operation alongside high precision. Consider the 8-SOIC package constraints and thermal performance limits when designing the PCB layout for optimal heat dissipation and signal integrity.

Part Context

This part belongs to the INA12x family of instrumentation amplifiers from Texas Instruments. It serves as a general-purpose solution for differential signal amplification where low noise and high accuracy are critical requirements in analog front-end circuits.

Replacement Considerations

Consult official substitution guides for compatible alternatives within the same product family or equivalent performance tiers from other manufacturers.