INA2128UA

Overview

The INA2128UA is a dual low-power instrumentation amplifier manufactured by Texas Instruments. It features two independent circuits housed in a 16-pin SOIC package. Key electrical specifications include a supply voltage range of 4.5 V to 36 V, a typical input offset voltage of 10 µV, and an input bias current of 2 nA. The device operates with a supply current of 1.4 mA for both channels, offers a slew rate of 4 V/µs, and provides a gain-bandwidth product of 200 kHz. It supports surface-mount installation and functions within a temperature range of -40°C to 85°C.

Feature Summary

• Dual-channel architecture providing two independent instrumentation amplifiers in a single package
• Low power consumption suitable for battery-operated applications
• High precision performance with low input offset voltage and bias current
• Wide single-supply voltage operation capability

Applications

• Industrial process control signal conditioning
• Medical equipment data acquisition systems
• Strain gauge and bridge sensor interfaces
• Precision measurement instrumentation

Procurement Notes

Verify the specific ordering suffix to ensure correct packaging configuration. Confirm that the component meets RoHS3 compliance requirements for your region. Check the manufacturer's datasheet for the latest moisture sensitivity level and recommended soldering profiles. Ensure the selected package variant matches your PCB footprint design constraints.

Selection Notes

Select this component when dual-channel isolation is required within a compact form factor. Consider the 16-SOIC package dimensions for board space limitations. Evaluate the 200 kHz gain-bandwidth product against your signal frequency requirements. Verify that the 1.4 mA supply current aligns with your system's power budget constraints.

Part Context

This part belongs to the INA2128 family of instrumentation amplifiers from Texas Instruments. It serves as a dual-channel counterpart to single-channel variants like the INA128. The device is designed for general-purpose precision amplification tasks requiring high common-mode rejection and low power consumption in industrial and scientific applications.

Replacement Considerations

INA2128UA/1KG4 is listed as a discontinued alternative with MFR Recommended status for INA2128UA/1K.