The SC4621 is designed specifically for angular position, over current detection and AC/DC current measurement which require both high accuracy and increased sensor bandwidth. The accuracy of this device is enhanced via programmability on the output pin for end-of-line optimization without the added complexity and cost of a fully programmable device. The programmable nature of the SC4621 enables it to acount for manufacturing tolerances in the final current sensing module assembly.
Both the quiescent voltage output and magnetic sensitivity are user adjustable. The quiescent voltage output is typically equal to VDD/2, and the sensitivity adjusted between 0.6mV/Gs and 6.4mV/Gs.
Each Bi-CMOS monolithic circuit integrates a Hall element, temperature-compensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, a low-impedance output stage, a proprietary dynamic offset cancellation technique and trimming unit.
It is packaged in a thin 3-pin SIP package to allow for easy integration with a magnetic core to create a highly accurate current sensing module.