INA280A5IDCKT

Overview

The INA280A5IDCKT is a high-side current sense amplifier featuring a fixed gain of 500 V/V. It operates with a supply voltage range of 2.7 V to 20 V and supports common-mode voltages from 2.7 V to 120 V. The device offers a bandwidth of 800 kHz, a slew rate of 2 V/µs, and a quiescent current of 370 µA. Key electrical characteristics include a maximum offset voltage of 150 µV, a typical CMRR of 140 dB, and a gain error of ±0.5%. It is housed in a space-efficient SC-70-5 package.

Feature Summary

• Provides a fixed internal gain of 500 V/V for high-sensitivity measurements
• Supports wide common-mode input voltage up to 120 V
• Features high-speed response with 800 kHz bandwidth and 2 V/µs slew rate
• Delivers high accuracy with low offset voltage and drift

Applications

• Active antenna system mMIMO (AAS)
• Macro remote radio unit (RRU)
• 48-V rack server power supplies
• Fast overcurrent protection circuits

Procurement Notes

Verify the specific suffix IDCKT corresponds to the SC-70-5 tape and reel packaging configuration. Confirm that the A5 designation strictly indicates the 500 V/V fixed gain option required for the design. Ensure the component meets RoHS compliance standards applicable to the target region. Validate that the operating temperature range of -40°C to +125°C aligns with environmental requirements.

Selection Notes

Select this variant when a high gain of 500 V/V is necessary to amplify small differential signals across the shunt resistor. The 800 kHz bandwidth is suitable for applications requiring rapid detection of transient currents. Consider the 370 µA quiescent current for power-sensitive designs. Ensure the output swing capabilities accommodate the downstream ADC or microcontroller input voltage levels.

Part Context

This component belongs to the INA280 family of high-precision current sense amplifiers. The family shares a common transconductance architecture and SC-70 footprint but varies by fixed gain options ranging from 20 V/V to 500 V/V. The INA280 series is designed for high-side sensing applications requiring wide common-mode voltage tolerance and fast response times.

Replacement Considerations

Other gain variants within the same package, such as INA280A4IDCKT (200 V/V) or INA280A3IDCKT (100 V/V), may be considered if the system gain requirements differ. Verify pin compatibility and thermal performance before substitution.