INA290A5IDCKT

Overview

The INA290A5IDCKT is a single-channel, high-side current-sense amplifier from Texas Instruments. It features a wide common-mode voltage range of 2.7 V to 120 V and operates on a supply voltage between 2.7 V and 20 V. The device provides a fixed gain of 500 V/V with a maximum gain error of ±0.1% and a typical DC CMRR of 160 dB. Key electrical specifications include an input offset voltage of ±12 µV (maximum), an input bias current of 20 µA (typical), and a quiescent current of 370 µA per channel. It offers a bandwidth of 800 kHz at this gain setting and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Ultra-precise measurement capability enabled by zero-drift architecture for low offset voltage and drift
• High common-mode rejection ratio ensuring accurate sensing across wide voltage ranges
• Low input bias current suitable for precision applications with small sensed currents
• Wide fixed-gain output options optimized for specific dynamic range requirements

Applications

• Active antenna system mMIMO
• Macro remote radio unit
• 48-V rack server power supplies
• Test and measurement equipment

Procurement Notes

Verify the exact part number against official manufacturer documentation to ensure compatibility with your design requirements. Confirm that the SC-70 package dimensions and pinout match your PCB layout constraints. Check for any recent lifecycle status updates or alternative recommendations from Texas Instruments before finalizing procurement plans.

Selection Notes

Select this component when high accuracy and wide common-mode voltage are required in space-constrained designs. The 500 V/V gain is ideal for detecting very small voltage drops across shunt resistors. Ensure the application does not require bidirectional sensing, as this device is designed for high-side current monitoring only.

Part Context

This device belongs to the INAx290 family of ultra-precise current-sense amplifiers. It shares architectural similarities with dual-channel (INA2290) and quad-channel (INA4290) variants but is packaged in a compact SC-70 format. The family is characterized by its transconductance architecture and current-feedback design, enabling low bias currents and high bandwidth performance.

Replacement Considerations

No public confirmed substitute part numbers are available.