INA2290A1IDGKR

Overview

The INA2290A1IDGKR is a dual-channel, ultra-precise current-sense amplifier from Texas Instruments. It operates with a common-mode voltage range of 2.7 V to 120 V and a supply voltage of 2.7 V to 20 V. The device features a fixed gain of 20 V/V, a maximum offset voltage of ±25 µV, and a typical DC CMRR of 160 dB. It offers a bandwidth of 1.1 MHz and a quiescent current of 370 µA per channel. Packaged in an 8-pin VSSOP, it supports operation from -40°C to +125°C.

Feature Summary

• Ultra-precise zero-drift architecture for high accuracy
• Wide common-mode voltage range up to 120 V
• High bandwidth of 1.1 MHz for fast transient response
• Dual-channel configuration in space-efficient package

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to ensure correct packaging and temperature grade. Confirm that the A1 gain variant matches the system design requirements before procurement.

Selection Notes

Select this component when high-side current sensing requires precision over a wide common-mode range. The dual-channel layout suits applications needing simultaneous monitoring of two rails. Ensure the 20 V/V gain aligns with the expected sense voltage and ADC input range.

Part Context

This part belongs to the INAx290 family, which includes single-channel (INA290) and quad-channel (INA4290) variants. All share the same core ultra-precise architecture but differ in channel count and package type. The INA2290 specifically provides two independent channels in an 8-pin VSSOP.

Replacement Considerations

Official substitutes within the same family include the INA290 for single-channel needs or the INA4290 for four-channel requirements. Verify pin compatibility and gain specifications when cross-referencing other TI current-sense amplifiers.