INA2290A3IDGKR

Overview

The INA2290A3IDGKR is a dual-channel, ultra-precise 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 of 2.7 V to 20 V. The device offers a fixed gain of 100 V/V with a maximum gain error of ±0.1% and offset voltage of ±15 µV. Key electrical parameters include a bandwidth of 900 kHz, quiescent current of 680 µA (typical), and high DC CMRR of 160 dB. It is housed in an 8-pin VSSOP package.

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 voltages.
• Wide bandwidth supports fast overcurrent protection and high-speed data acquisition applications.

Applications

• Active antenna system mMIMO
• Macro remote radio unit power monitoring
• 48-V rack server current sensing

Procurement Notes

Verify the specific suffix IDGKR corresponds to the VSSOP-8 package and tape-and-reel shipping configuration as defined in the official TI ordering information. Confirm that the A3 designation matches the required 100 V/V gain for your circuit design. Ensure compatibility with the specified operating temperature range and supply voltage requirements before finalizing procurement.

Selection Notes

Select this component when dual-channel precision current sensing is required within a compact footprint. The 100 V/V gain option is suitable for applications requiring moderate signal amplification with minimal external resistor networks. Consider the 900 kHz bandwidth and low offset voltage for systems demanding high accuracy and fast transient response in high-side current monitoring scenarios.

Part Context

This device belongs to the INAx290 family of ultra-precise current-sense amplifiers. The INA2290 variant specifically provides two independent channels in an 8-pin VSSOP package, offering space efficiency compared to the single-channel INA290 or quad-channel INA4290. All members share the same core zero-drift technology and wide common-mode input capabilities.

Replacement Considerations

Direct substitutes within the same family include other gain variants of the INA2290 (e.g., INA2290A1, INA2290A2) if different amplification factors are acceptable. Single-channel equivalents like the INA290 may be used if only one channel is needed, though pinout differences must be addressed.