INA186A2IDCKT

Overview

The INA186A2IDCKT is a precision current sense amplifier from Texas Instruments, part of the Zero-Drift series. It features a fixed gain of 50 V/V and operates with a supply voltage range of 1.7 V to 5.5 V. Key electrical parameters include a maximum input offset voltage of 3 µV, an input bias current of 500 pA, and a gain error of 0.04%. The device supports bidirectional current sensing with a common-mode voltage range of -200 mV to 40 V. It offers a gain-bandwidth product of 37 kHz and consumes 48 µA of supply current. The component is housed in a SC-70-6 package and functions within a temperature range of -40°C to 125°C.

Feature Summary

• Zero-drift architecture ensures high precision by minimizing input offset voltage drift over temperature and time.
• Bidirectional sensing capability allows accurate measurement of current flow in both directions across the shunt resistor.
• High common-mode voltage range supports operation in low-side and high-side configurations up to 40 V.

Applications

• Battery management systems requiring precise current monitoring
• Industrial process control loops for sensor signal conditioning
• Automotive electronics compliant with AEC-Q100 standards

Procurement Notes

Verify the specific suffix IDCKT corresponds to the SC-70-6 tape-and-reel packaging configuration. Confirm that the device meets the required thermal performance specifications for the intended operating environment. Ensure compatibility with the system's supply voltage limits and common-mode voltage requirements before integration into the design.

Selection Notes

Select this component when ultra-low offset voltage and minimal drift are critical for measurement accuracy. The fixed 50 V/V gain suits applications where moderate amplification is needed without external resistors. Consider the small SC-70-6 footprint for space-constrained designs. Evaluate the 37 kHz bandwidth against the required signal frequency response to ensure adequate performance for the target application dynamics.

Part Context

This device belongs to the INA186 family of zero-drift current sense amplifiers. It shares architectural similarities with other members like the INA186A1IDCKR and INA186A3IDCKR, differing primarily in gain settings and package options. The family is designed for high-precision applications demanding stability and low power consumption in compact form factors.

Replacement Considerations

Direct substitutes include INA186A1IDCKR (Gain 10 V/V) and INA186A3IDCKR (Gain 100 V/V). For pin-compatible alternatives with different gain or package types, consult the manufacturer's selection guide for compatible devices within the same series.