INA186A3IDCKT

Overview

The INA186A3IDCKT is a bidirectional, high-precision current-sense amplifier from the Texas Instruments INA186 series. It features a fixed gain of 100 V/V and operates on a single supply voltage ranging from 1.7 V to 5.5 V. The device supports a common-mode voltage range from -200 mV to 40 V. Key electrical specifications include a maximum input offset voltage of 3 µV, an input bias current of 500 pA, and a gain error of 0.04%. It provides a common-mode rejection ratio (CMRR) of 150 dB and has a bandwidth of 35 kHz. The unit draws 90 µA of supply current and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Zero-drift architecture utilizing chopper stabilization for high precision
• Bidirectional sensing capability for both sourcing and sinking currents
• High common-mode rejection ratio ensuring accurate measurements in noisy environments

Applications

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

Procurement Notes

Verify the specific suffix IDCKT corresponds to the SC-70-6 package variant when reviewing datasheets or ordering documentation. Confirm that the A3 grade designation aligns with the required gain accuracy and offset voltage specifications for the target application circuit design.

Selection Notes

Select this component when precise low-side or high-side current measurement is required across a wide common-mode voltage range. The zero-drift technology minimizes offset errors over temperature, making it suitable for applications demanding high DC accuracy without frequent calibration.

Part Context

This part belongs to the INA186 family of zero-drift current-sense amplifiers. It shares architectural similarities with other members like the INA186A1 and INA186A2 but differs in its fixed gain setting and specific grading parameters. The family is designed to replace traditional operational amplifier solutions in current sensing applications.

Replacement Considerations

Check for direct pin-compatible alternatives within the same series such as INA186A1IDCKR or INA186A2IDCKR if different gain factors are acceptable.