INA4290A5IRGVR

Instrumentation, Op Amps, Buffer Amps Overview

The INA4290A5IRGVR is a quad-channel, high-side current-sense amplifier from the INAx290 family. It operates with a supply voltage of 2.7 V to 20 V and supports a common-mode input range of 2.7 V to 120 V. The device features a fixed gain of 500 V/V, a typical DC CMRR of 160 dB, and an AC CMRR of 85 dB at 50 kHz. Key electrical parameters include a maximum offset voltage of ±12 µV, input bias current of 20 µA, quiescent current of 1250 µA (typical), and a bandwidth of 800 kHz. It is housed in a 16-pin QFN package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Quad-channel architecture for multi-rail or multi-phase sensing
• Ultra-precise zero-drift topology for low offset and drift
• Wide common-mode voltage range up to 120 V
• High bandwidth and fast slew rate for rapid overcurrent detection

Instrumentation, Op Amps, Buffer Amps Applications

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

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'RGVR' corresponds to the 16-pin QFN package and tape-and-reel shipping configuration. Confirm the 'A5' designation matches the required 500 V/V fixed gain. Ensure the component meets AEC-Q100 requirements if automotive qualification is needed, as standard versions may differ.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this part when four independent high-side current channels are required within a single footprint. The 500 V/V gain is optimal for detecting very small voltage drops across low-value shunt resistors. Consider the 1250 µA quiescent current per device against total system power budgets compared to single-channel alternatives.

Instrumentation, Op Amps, Buffer Amps Part Context

This component belongs to the INAx290 series, which includes single-channel (INA290) and dual-channel (INA2290) variants. The INA4290 specifically integrates four identical amplifiers into one package to save board space in dense power management designs while maintaining the series' precision characteristics.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

INA2290A5IDGKR

Instrumentation, Op Amps, Buffer Amps FAQ

What is the survival voltage limit for the INA4290?

The device can withstand a survival common-mode voltage range of -20 V to +122 V.

Does the INA4290 support bidirectional current sensing?

No, the INAx290 family is designed for high-side only current sensing applications.