Precision current sense for industrial and automotive rails
The Texas Instruments INA2290A4IDGKT is a dedicated current sense amplifier in a single-circuit configuration, built for measuring current across a shunt resistor on supply rails from 2.7 V up to 20 V. Its 2 µV input offset voltage and 850 kHz gain-bandwidth product make it a strong fit for applications where you need both DC accuracy and the bandwidth to capture switching-load transients — think motor current monitoring in industrial drives, solenoid current in automotive transmission controllers, or load current in 12 V and 24 V power distribution.
Slew rate and bandwidth — what they mean for transient response
The 2 V/µs slew rate and 850 kHz gain-bandwidth product define how fast this amplifier responds to a step change in current. For a typical shunt voltage swing, the output settles in a few microseconds — fast enough to catch overcurrent events from short circuits or inrush in most power systems.
Supply range and quiescent current — rail flexibility vs power budget
The 2.7 V to 20 V supply span means this part can run directly off a logic rail or a system bus — no secondary regulator needed for the sense amplifier itself. The 680 µA quiescent supply current is moderate for most line-powered or moderately battery-powered designs.
Package and footprint — 8-VSSOP for space-constrained boards
The INA2290A4IDGKT comes in an 8-VSSOP package (the MSOP-8 variant with 0.118-inch / 3.00 mm body width). It is a surface-mount part intended for reflow assembly. The small footprint suits multi-channel boards where board area is tight, but the fine pitch means the PCB layout should follow the manufacturer's recommended land pattern — particularly for the thermal pad connection if one exists in the package outline.
Lifecycle and compliance — active, RoHS3, no end-of-life concern
No successor or second-source alternate is recorded in the official cross-reference — the part is sole-sourced from Texas Instruments. For production BOMs, qualifying the quad-channel INA4290A2IRGVR requires a separate design validation as it is a four-channel device with different pinout and package.