INA2141P

Overview

The INA2141P is a dual low-power instrumentation amplifier manufactured by Texas Instruments, housed in an 8-pin PDIP package. It features a fixed gain of 10 V/V and operates within a supply voltage range of 4.5 V to 36 V. Key electrical specifications include a 200 kHz bandwidth, a slew rate of 4 V/us, and a common-mode rejection ratio of 117 dB. The device draws 750 uA of operating current per channel and maintains an input offset voltage of 50 uV with an input bias current of 5 nA. It supports an industrial 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 optimized for battery-operated applications through minimal quiescent current draw.
• High precision performance characterized by low input offset voltage and high common-mode rejection capabilities.

Applications

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

Procurement Notes

Verify the specific package type upon ordering, as the 'P' suffix typically denotes a plastic DIP package, whereas other suffixes like 'U' indicate SOIC packages. Confirm that the fixed gain configuration meets the circuit requirements, as external resistors are not required for this variant. Ensure compatibility with the target PCB footprint and soldering profile for through-hole mounting.

Selection Notes

Select the INA2141P when a dual-channel solution is required without the need for adjustable gain. Compare against single-channel alternatives if board space permits, noting that this component integrates two amplifiers. Consider the trade-off between the fixed gain limitation and the reduced component count. Verify that the 200 kHz bandwidth is sufficient for the highest frequency signals present in the application.

Part Context

This component belongs to the INA2141 family of instrumentation amplifiers, which are designed for general-purpose precision applications. The family includes variants with different packaging options such as SOIC and TSSOP, and potentially different gain configurations. The INA2141P specifically represents the through-hole DIP version of this dual-channel low-power series.

Replacement Considerations

Direct replacements include other parts from the INA2141 family with compatible pinouts, such as the INA2141U or INA2141UA, provided the package difference is acceptable. Cross-reference with similar dual instrumentation amplifiers from other manufacturers only if pin-to-pin compatibility and electrical parameters match exactly.