High-side current monitor with ±0.4% accuracy for power rail tracking
The PAC1921-1-AIA-TR: This level of precision means the device can resolve small current changes — useful for detecting load faults, battery charge/discharge rates, or idle current draw in battery-powered gear. The high-side sensing method keeps the sense resistor between the supply and the load, preserving the system ground path — a cleaner arrangement than low-side sensing for applications where ground integrity matters.
Package and board-fit for production and prototype runs
A via array under the pad helps spread heat into the inner copper planes. It is offered on Tape & Reel (TR) for automated pick-and-place in volume production, and also in Cut Tape (CT) for prototype or low-quantity builds. The reel quantity is standard for the 10-VFDFN package size — confirm the reel count at quote time.