INA4290A1IRGVT

Instrumentation, Op Amps, Buffer Amps Overview

The INA4290A1IRGVT 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 20 V/V. Key electrical parameters include a maximum input offset voltage of ±32 µV, a typical DC common-mode rejection ratio (CMRR) of 160 dB, and a bandwidth of 1.1 MHz. The device operates on a single supply from 2.7 V to 20 V with a quiescent current of 1.25 mA. 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 (RRU)
• 48-V rack server power supplies
• Test and measurement equipment

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the suffix 'VT' indicates tape-and-reel packaging when ordering. Confirm the 'A1' designation corresponds to the 20 V/V gain option. Ensure the QFN-16 package dimensions match the PCB footprint requirements. Check for moisture sensitivity level compliance during storage and reflow soldering processes.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring simultaneous monitoring of multiple high-voltage rails. The quad-channel design reduces board space compared to discrete single-channel solutions. The 20 V/V gain is suitable for systems where the shunt voltage drop is relatively large relative to the ADC input range. Consider thermal dissipation in dense layouts due to the four integrated channels.

Instrumentation, Op Amps, Buffer Amps Part Context

The INA4290 is part of the INAx290 series, which includes single-channel (INA290) and dual-channel (INA2290) variants. All share the same ultra-precise architecture and specifications but differ in channel count and package type. The INA4290 specifically utilizes a 4 mm x 4 mm QFN package to accommodate the four independent amplifiers within a compact form factor.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct functional replacements within the same family include the INA2290 for dual-channel needs or the INA290 for single-channel applications. Cross-family replacement requires verifying that the new device supports the required 120 V common-mode voltage and offers comparable CMRR and offset voltage specifications.