INA2128U

Overview

The INA2128U is a dual low-power instrumentation amplifier manufactured by Texas Instruments, housed in a 16-pin SOIC surface-mount package. It features a gain bandwidth product of 1.3 MHz and a slew rate of 4 V/µs. The device operates on a supply voltage range of 2.25 V to 18 V with a typical supply current of 1.5 mA per channel. Key electrical specifications include an input offset voltage of 50 µV, an input bias current of 2 nA, and a common-mode rejection ratio (CMRR) of 80 dB. It supports an operating temperature range from -40°C to 85°C.

Feature Summary

• Dual-channel architecture providing two independent instrumentation amplifiers within a single integrated circuit.
• Low power consumption design suitable for battery-operated applications with minimal supply current requirements.
• High precision signal conditioning capabilities characterized by low input offset voltage and bias current.
• Wide common-mode rejection performance ensuring accurate differential signal measurement in noisy environments.

Applications

• Industrial process control sensor interfaces
• Medical equipment signal conditioning
• Data acquisition systems

Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's latest datasheet to ensure compatibility with your design requirements. Confirm that the component meets all necessary environmental and safety standards relevant to your application region before finalizing procurement decisions.

Selection Notes

Select this component when a dual-channel solution is required to save board space compared to using two single-channel amplifiers. Consider the 1.3 MHz bandwidth and 4 V/µs slew rate for applications requiring moderate speed signal processing. Ensure the 2.25 V minimum supply voltage aligns with your system's power rails.

Part Context

The INA2128U belongs to the INA2128 family of instrumentation amplifiers from Texas Instruments. This series is designed for general-purpose high-precision applications. The 'U' suffix indicates the SOIC-16 surface-mount package option, distinguishing it from other packaging variants like the DIP or TSSOP options available within the same functional family.

Replacement Considerations

Check for direct pin-compatible replacements such as the INA2128UA if different packaging is needed. Verify that any substitute maintains the same dual-channel configuration, supply voltage range, and electrical performance characteristics to ensure circuit functionality remains unchanged.