INA2143UA

Overview

The INA2143UA is a dual low-power instrumentation amplifier manufactured by Texas Instruments. It features a supply voltage range of 4.5 V to 36 V and operates within a temperature range of -40°C to +85°C. Key electrical specifications include a 200 kHz bandwidth, a slew rate of 4 V/µs, and a typical common-mode rejection ratio (CMRR) of 117 dB. The device draws 750 µA of supply current per channel and offers fixed gains of 10 V/V or 100 V/V. It is housed in a 16-pin SOIC package.

Feature Summary

• Dual-channel architecture providing two independent instrumentation amplifiers in a single package for space-constrained designs.
• Low power consumption with a supply current of 750 µA per channel, suitable for battery-operated applications.
• High precision performance characterized by a 117 dB CMRR and low input offset voltage of 50 µV.
• Fixed gain options of 10 V/V or 100 V/V eliminate the need for external precision resistors.

Applications

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

Procurement Notes

Verify the specific gain variant required, as the base part number may correspond to a fixed gain configuration. Confirm package availability and lead times through authorized distributors. Ensure compliance with RoHS3 standards if applicable to your manufacturing requirements. Check for any recent product change notices regarding pinout or electrical characteristics updates.

Selection Notes

Select the INA2143UA when dual-channel instrumentation is needed with low power constraints. Compare against single-channel alternatives if only one amplifier is utilized to optimize cost. Consider the fixed gain limitations versus programmable gain amplifiers if variable gain is required. Verify that the 200 kHz bandwidth meets the signal frequency requirements of the application.

Part Context

The INA2143UA belongs to the INA214x family of instrumentation amplifiers from Texas Instruments. This family is designed for high-precision applications requiring low power and high common-mode rejection. The 'UA' suffix indicates an 8-pin or 16-pin SOIC package variant, depending on the specific sub-model within the series.

Replacement Considerations

INA2141U is a compatible alternative within the same family offering similar dual-channel low-power specifications.