INA4290A5IRGVT

Instrumentation, Op Amps, Buffer Amps Overview

The INA4290A5IRGVT 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 a fixed gain of 500 V/V. The device offers ultra-precise measurement with a maximum offset voltage of ±12 µV and a typical DC CMRR of 160 dB. It operates on a single supply from 2.7 V to 20 V, drawing 1.25 mA quiescent current per channel. Key electrical parameters include an 800 kHz bandwidth at G=500, 2 V/µs slew rate, and operation over an extended temperature range of -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-precise zero-drift architecture enables accurate measurement of low sense voltages across wide operating temperatures.
• High common-mode rejection ratio (CMRR) ensures reliable performance in noisy environments with large common-mode voltages.
• Wide fixed-gain options optimize output dynamic range for specific signal-to-noise requirements.
• Integrated thermal pad in QFN package supports efficient heat dissipation for compact designs.

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 'VT' suffix indicates tape-and-reel packaging when ordering. Confirm the 'A5' designation corresponds to the 500 V/V gain option required for your circuit design. Ensure the QFN16 package dimensions match your PCB footprint constraints. Cross-reference the datasheet revision date to confirm component availability and any potential updates to electrical characteristics or pin configurations before finalizing procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring high-side current sensing with a wide common-mode voltage range up to 120 V. The 500 V/V gain is suitable for detecting small voltage drops across low-value shunt resistors. Consider the 1.25 mA per-channel quiescent current if power efficiency is critical. The quad-channel configuration allows monitoring multiple rails within a single package, saving board space compared to discrete solutions.

Instrumentation, Op Amps, Buffer Amps Part Context

The INA4290 belongs to the INAx290 series, which includes single-channel (INA290), dual-channel (INA2290), and quad-channel variants. All share the same core ultra-precise architecture but differ in channel count and package type. The INA4290 specifically utilizes a 4 mm x 4 mm QFN package to accommodate four independent amplifiers, making it ideal for dense multi-rail power distribution systems.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct replacements within the same family include INA2290 (dual-channel) or INA290 (single-channel) if fewer channels are acceptable. Other Texas Instruments current-sense amplifiers with similar specifications may require verification of gain accuracy, CMRR, and package compatibility.