INA4290A4IRGVR

Instrumentation, Op Amps, Buffer Amps Overview

The INA4290A4IRGVR is a quad-channel, high-side current-sense amplifier from the INAx290 family. It features a fixed gain of 200 V/V and operates with a common-mode voltage range of 2.7 V to 120 V. The device provides an ultra-precise measurement capability with a maximum input offset voltage of ±12 µV and a typical DC common-mode rejection ratio (CMRR) of 160 dB. It supports a supply voltage range of 2.7 V to 20 V and includes a bandwidth of 850 kHz at the specified gain.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-precise zero-drift architecture enables accurate low-voltage sensing across extended temperature ranges
• High common-mode rejection ratio ensures signal integrity in high-noise environments
• Wide common-mode voltage range allows operation in high-voltage bus applications

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 ordering suffix matches the required package and temperature grade. Confirm that the A4 designation corresponds to the 200 V/V gain option for your circuit design. Ensure the QFN-16 footprint aligns with your PCB layout constraints before finalizing procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when four independent high-side current channels are required within a single package. The 200 V/V gain is suitable for applications requiring high resolution on small differential signals. Consider the thermal resistance characteristics of the QFN package for heat dissipation requirements in dense layouts.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INAx290 series of ultra-precise current-sense amplifiers. The quad-channel variant consolidates multiple sensing functions into a compact 4 mm x 4 mm QFN package. It shares core architectural features with single and dual-channel counterparts while providing integrated multi-channel monitoring capabilities.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes include other INA4290 variants with different gain settings such as INA4290A1, INA4290A2, INA4290A3, or INA4290A5. Single-channel equivalents like the INA290 or dual-channel versions like the INA2290 may be used if channel count permits.