INA185A4IDRLT

Overview

The INA185A4IDRLT is a high-precision, bidirectional current sense amplifier from Texas Instruments. It operates within a supply voltage range of 2.7 V to 5.5 V and supports common-mode voltages from -200 mV to 26 V. The device features a fixed gain of 200 V/V, a gain bandwidth product of 105 kHz, and a slew rate of 2 V/us. Key electrical specifications include an input offset voltage of 25 uV, a common-mode rejection ratio (CMRR) of 120 dB, and a maximum gain error of 0.07%. It draws 260 uA of quiescent current and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Bidirectional sensing capability for both high-side and low-side applications
• High precision with low input offset voltage and drift
• Wide common-mode voltage range extending below ground
• Low power consumption suitable for battery-operated systems

Applications

• Battery management systems
• Industrial process control
• Power supply monitoring

Procurement Notes

Verify the specific suffix IDRLT against the manufacturer's official datasheet to confirm package type and reel specifications. Ensure compatibility with existing PCB footprints and reflow profiles. Cross-reference part numbers with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status as required by regional regulations before final procurement.

Selection Notes

Select this component when bidirectional current measurement is required with high accuracy in low-voltage environments. The 200 V/V gain suits applications detecting small voltage drops across shunt resistors. Consider the 120 dB CMRR for noisy industrial environments. Verify that the 26 V common-mode limit accommodates the system's highest potential difference between the shunt and ground.

Part Context

This device belongs to the INA185 family of ultra-small, precision current sense amplifiers. It shares architectural similarities with the INA180 but offers enhanced performance metrics such as higher CMRR and lower offset voltage. The IDRLT designation indicates a tape-and-reel packaging format optimized for automated surface-mount assembly processes.

Replacement Considerations

INA185A4IDCKR: Different SC-70-6 package; verify pinout compatibility. INA185A4IDRLR: Identical electrical specifications and function; confirms same core device with potentially different manufacturing lot or minor revision.