INA2141UA/1K

Overview

The INA2141UA/1K is a dual low-power instrumentation amplifier from Texas Instruments, housed in a SOIC-16 surface-mount package. It features a gain of 10 V/V or 100 V/V, a 3dB bandwidth of 200 kHz, and a slew rate of 4 V/us. Key electrical specifications include a common-mode rejection ratio (CMRR) of 117 dB, input bias current of 5 nA, and input offset voltage of 50 uV. The device operates on a supply voltage range of 4.5 V to 36 V with a quiescent current of 750 uA per channel. It supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Dual-channel architecture providing two independent instrumentation amplifiers in a single package for space-constrained designs.
• Low power consumption characteristics suitable for battery-operated applications with minimal quiescent current draw.
• High precision performance featuring high common-mode rejection ratio and low input offset voltage for accurate signal conditioning.

Applications

• Industrial process control systems requiring precise differential signal measurement
• Medical equipment utilizing low-noise signal acquisition channels
• Data acquisition systems needing high-impedance sensor interfacing

Procurement Notes

Verify the specific suffix /1K indicates reel packaging when ordering. Confirm the required gain configuration matches the fixed internal resistor network options available for this part number. Ensure the SOIC-16 footprint aligns with the target PCB layout constraints before finalizing procurement decisions.

Selection Notes

Select this component when dual-channel isolation is required without increasing board space. Compare against single-channel alternatives if only one amplifier is needed to reduce cost. Verify that the fixed gain options meet the system requirements without external resistors. Check supply voltage limits against the application's power rails to ensure operation within the 4.5 V to 36 V range.

Part Context

This part belongs to the INA2141 family of instrumentation amplifiers designed for general-purpose precision applications. It shares architectural similarities with other low-power instrumentation amplifiers but offers dual-channel integration. The series focuses on balancing performance metrics like CMRR and bandwidth with power efficiency for industrial and medical use cases.

Replacement Considerations

Check for direct pin-compatible upgrades within the INA2141 series. Evaluate similar dual instrumentation amplifiers from other manufacturers if supply constraints exist. Ensure replacement parts match the SOIC-16 package and electrical specifications closely.