INA141PA

Overview

The INA141PA is a precision, low-power instrumentation amplifier manufactured by Texas Instruments. It features fixed gains of 10 V/V or 100 V/V and operates on a single supply voltage ranging from 2.7 V to 36 V. The device offers a gain error of 0.002% and a common-mode rejection ratio (CMRR) of 80 dB. It draws a typical supply current of 500 µA per amplifier and functions within an operating temperature range of -40°C to +85°C. The component is housed in an 8-pin PDIP package.

Feature Summary

• Provides high-precision signal amplification with fixed gain options of 10 V/V or 100 V/V.
• Operates efficiently on a single power supply with low quiescent current consumption.
• Delivers stable performance across a wide common-mode voltage range relative to the supply rails.

Applications

• Industrial process control sensor conditioning
• Medical equipment signal acquisition
• Data acquisition systems requiring precise differential measurements

Procurement Notes

Verify the specific gain variant (G=10 or G=100) as part numbers may differ. Confirm the package type matches the design requirements. Check for RoHS compliance status if environmental regulations apply. Ensure the operating temperature range meets the system's thermal constraints. Validate pinout compatibility during PCB layout integration.

Selection Notes

Select this component when high accuracy and low power are required in single-supply applications. Consider the fixed gain limitation compared to programmable alternatives. Evaluate the CMRR specifications against the noise environment. Compare the input offset voltage requirements with other precision amplifier families.

Part Context

The INA141 belongs to the Burr-Brown instrumentation amplifier family acquired by Texas Instruments. It is designed for applications demanding high accuracy without the complexity of external gain-setting resistors. The device serves as a robust solution for interfacing low-level signals from transducers in industrial and medical environments.

Replacement Considerations

INA141U: Surface mount SOIC version of the same functional device. INA141P: Alternative packaging option within the same series. Verify pin compatibility and gain configuration before substitution.