Precision current measurement with zero-drift topology
The INA186A5IDCKR is a single-channel current-sense amplifier from TI's Zero-Drift series, designed to measure voltage across a shunt resistor with minimal input offset drift over temperature and time. A 3 µV typical input offset voltage and 500 pA input bias current let it resolve microampere-level load changes from a milliohm shunt without significant error — the zero-drift architecture keeps that offset stable across the -40°C to 125°C operating range.
Bandwidth, supply, and package for BOM fit
The 27 kHz gain-bandwidth product and 0.3 V/µs slew rate limit the usable signal bandwidth to DC and low-frequency load transients — this part suits steady-state or slowly varying current monitoring, not high-speed switching waveforms. Operating from a single 1.7 V to 5.5 V supply while drawing only 48 µA quiescent current, it fits into low-power and battery-operated designs where the shunt voltage is referenced to the supply rail. Housed in a 6-pin SC-70-6 (SOT-363) package, the footprint is compact enough for space-constrained boards but still hand-solderable for prototyping — the rail-to-rail output stage drives the ADC input directly without a secondary gain stage.