INA4290A2IRGVT

Instrumentation, Op Amps, Buffer Amps Overview

The INA4290A2IRGVT is a quad-channel, high-voltage current-sense amplifier from Texas Instruments. It features a wide common-mode voltage range of 2.7 V to 120 V and operates on a single supply from 2.7 V to 20 V. The device provides a fixed gain of 50 V/V with 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 ±20 µV, input bias current of 20 µA, bandwidth of 1.1 MHz, and 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 power monitoring
• Ultra-precise zero-drift topology enabling accurate low-voltage sensing
• High common-mode rejection ratio for noisy environments
• Wide operational common-mode voltage range up to 120 V

Instrumentation, Op Amps, Buffer Amps Applications

• Active antenna system mMIMO (AAS)
• 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 suffix 'VT' indicates tape-and-reel packaging when sourcing. Confirm that the A2 designation corresponds to the required 50 V/V gain setting for your circuit design. Ensure the RGV package footprint matches your PCB layout constraints. Cross-reference the datasheet revision date to ensure compatibility with latest thermal and electrical specifications.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring simultaneous monitoring of four distinct current paths within a high-voltage environment. The 50 V/V gain option balances dynamic range and sensitivity effectively. Consider the 16-pin QFN package for space-constrained designs. Verify that the 120 V common-mode limit aligns with your system's bus voltage requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INAx290 family of ultra-precise current-sense amplifiers. While the single-channel INA290 uses an SC-70 package and the dual-channel INA2290 uses a VSSOP, the INA4290 utilizes a compact 4 mm x 4 mm QFN package. This family shares core architectural features like zero-drift technology and high CMRR across all channel counts.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes within the same family include the INA4290A1IRGVT (20 V/V gain), INA4290A3IRGVT (100 V/V gain), INA4290A4IRGVT (200 V/V gain), and INA4290A5IRGVT (500 V/V gain). These parts share identical pinouts and packages but differ in internal gain settings.