7 kHz gain-bandwidth, 0.55 µV offset — what the ratings mean for a shunt-based current measurement
The INA211AIDCKT is a single-channel current sense amplifier from Texas Instruments, designed to measure voltage across a shunt resistor and output a ground-referenced signal. The 7 kHz gain-bandwidth product sets the upper frequency for accurate current monitoring — above this, the closed-loop gain rolls off, so the part is suited for DC and low-frequency AC current sensing rather than fast-switching waveforms. With a 0.55 µV typical input offset voltage, the error contribution at the shunt is minimal — for a 10 mΩ shunt carrying 1 A, the 10 mV sense signal sees an offset error of just 0.0055 %, preserving measurement accuracy at low drop voltages. The 0.4 V/µs slew rate limits the output's ability to track fast current transients — a full-scale 2 V step at the output settles in roughly 5 µs, which is adequate for load-step monitoring but not for sub-microsecond fault detection.
Supply range and quiescent current — always-on sense in battery-powered systems
Operating from 2.7 V to 26 V, the INA211AIDCKT covers common supply rails from 3.3 V logic to 24 V industrial buses. The 65 µA quiescent current makes it suitable for always-on current monitoring in battery-operated equipment — the sense amplifier's draw is comparable to the self-discharge rate of a small coin cell. No derating is required across the full temperature band for the supply current or offset voltage, though the input bias current of 28 µA (which flows through the shunt) should be accounted for in the measurement budget at high temperatures.
SC-70-6 package — footprint and ordering variant
Housed in a 6-pin SC-70 (SOT-363) package, the INA211AIDCKT occupies roughly 2.0 mm × 2.1 mm of board area. The SC-70-6 footprint is shared with many other TI current-sense amplifiers, allowing a layout-compatible swap within the INA21x family without a board spin. Supplied on Tape & Reel (TR) or Cut Tape (CT) — the TR suffix on the order code indicates reel packaging for automated pick-and-place. The CT option is available for prototype or low-volume builds through the same ordering code.
Active lifecycle and compliance
The part is RoHS3 compliant (2011/65/EU + 2015/863), with no exemptions listed.