INA4290A3IRGVR

Instrumentation, Op Amps, Buffer Amps Overview

The INA4290A3IRGVR is a quad-channel, high-side current-sense amplifier from the INAx290 family. It features a wide common-mode voltage range of 2.7 V to 120 V and an operational supply voltage of 2.7 V to 20 V. The device provides a fixed gain of 100 V/V with a maximum gain error of ±0.1% and a typical DC CMRR of 160 dB. Key electrical parameters include a bandwidth of 900 kHz, a slew rate of 2 V/µs, and a quiescent current of 1.25 mA per channel. It operates within a temperature range of -40°C to +125°C and is housed in a 16-pin QFN package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-precise zero-drift architecture enables accurate measurement of low sense voltages across extended temperature ranges.
• High common-mode rejection ratio ensures reliable performance in noisy environments with large common-mode voltage fluctuations.
• Wide bandwidth and fast slew rate support rapid detection and processing of overcurrent events.

Instrumentation, Op Amps, Buffer Amps Applications

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

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout compatibility and package dimensions. Ensure that the selected gain variant matches the required signal-to-noise ratio for the target application. Cross-reference thermal resistance values with the intended PCB layout to maintain safe operating junction temperatures under maximum load conditions.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high-side sensing is required with a common-mode voltage up to 120 V. The quad-channel configuration allows for monitoring multiple rails within a single footprint. Consider the 100 V/V gain option if the differential input signal is small relative to the output dynamic range requirements. Evaluate the 900 kHz bandwidth to ensure it meets the speed requirements for overcurrent protection circuits.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INAx290 series, which includes single-channel (INA290), dual-channel (INA2290), and quad-channel (INA4290) variants. All share the same ultra-precise, zero-drift topology and wide common-mode range specifications. The INA4290 specifically integrates four independent channels into a compact 4 mm x 4 mm QFN package to save board space in dense designs.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Compatible substitutes within the same family include INA4290A1IRGVR, INA4290A2IRGVR, INA4290A4IRGVR, and INA4290A5IRGVR. These parts offer different fixed gains (20 V/V, 50 V/V, 200 V/V, and 500 V/V respectively) while maintaining identical pinouts and package dimensions.