INA141U/2K5

Overview

The INA141U/2K5 is a precision, low-power instrumentation amplifier manufactured by Texas Instruments. It offers fixed gains of 10 V/V and 100 V/V, making it suitable for applications requiring high accuracy with minimal external components. The device operates on a single supply voltage ranging from 3V to 36V, consuming only 175µA of quiescent current. It features a wide common-mode input range that extends beyond the supply rails, ensuring reliable performance in various signal conditioning scenarios.

Feature Summary

• Provides fixed internal gain options of 10 V/V or 100 V/V to simplify circuit design
• Operates on a single power supply with a wide input common-mode voltage range extending beyond the rails
• Delivers precision performance with low power consumption suitable for battery-operated systems

Applications

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

Procurement Notes

Verify the specific gain configuration (G=10 or G=100) required for your application, as the base part number may denote a specific gain variant or require selection via external pins depending on the exact datasheet revision. Confirm the package type matches your PCB layout requirements. Ensure compatibility with your system's voltage levels and temperature range specifications before finalizing the order.

Selection Notes

Select this component when a fixed-gain instrumentation amplifier is needed to reduce board space and component count. It is ideal for applications where the signal source impedance is low and high common-mode rejection is required. Consider the available gain settings against the expected signal amplitude to ensure optimal dynamic range without external feedback resistors.

Part Context

This part belongs to the INA141 family of instrumentation amplifiers from Texas Instruments. The 'U' suffix indicates an SOIC-8 surface-mount package, while '/2K5' denotes a reel quantity of 2,500 units. This series is designed for general-purpose precision applications, offering a balance of performance and power efficiency compared to higher-speed or higher-voltage variants.

Replacement Considerations

Direct replacements include other fixed-gain instrumentation amplifiers such as the INA141UA or INA141E4. Cross-reference with similar devices like the INA118 or INA131 if adjustable gain is acceptable, though pinouts and performance characteristics will differ.