INA186A1IDCKR

Overview

The INA186A1IDCKR is a single-channel, zero-drift current sense amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 1.7 V to 5.5 V and supports bidirectional current sensing with a common-mode voltage spanning from -200 mV to 40 V. Key electrical specifications include a gain bandwidth product of 45 kHz, an input bias current of 500 pA, and an input offset voltage of 3 µV. The device features a fixed gain of 50 V/V, a power supply current of 90 µA, and a slew rate of 0.3 V/µs. It is housed in a SC-70-6 package and functions reliably across a temperature range of -40°C to 125°C.

Feature Summary

• Zero-drift architecture ensures high precision by minimizing offset voltage drift over temperature variations.
• Bidirectional sensing capability allows accurate measurement of current flow in both directions relative to ground.
• Wide common-mode voltage range enables operation in high-side configurations up to 40 V.

Applications

• Battery management systems requiring precise low-current monitoring
• Industrial process control loops for sensor signal conditioning
• Automotive electronics compliant with standard operating conditions

Procurement Notes

Verify the specific suffix IDCKR corresponds to the SC-70-6 surface-mount package configuration. Confirm that the A1 grade meets the required offset voltage accuracy for your application. Ensure compatibility with RoHS3 standards if environmental compliance is mandatory. Check datasheet revisions for any recent marking or assembly site changes.

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 external resistors are undesirable. Consider the SC-70-6 package size constraints against available PCB real estate. Evaluate the 90 µA supply current against strict power budget requirements.

Part Context

This part belongs to the INA186 family of high-precision current sense amplifiers. The series is characterized by its zero-drift technology, which distinguishes it from chopper-stabilized alternatives by offering lower noise at higher frequencies. The A1 variant specifies tighter initial offset voltage tolerances compared to standard grades.

Replacement Considerations

INA186A1IDCKRG4 is a verified lead-free replacement option within the same manufacturer lineup. Verify pinout compatibility before substitution. Other INA186 variants may differ in gain or package type.