Allegro MicroSystems Inc., Worcester, MA, offers the A1360/1/2 programmable linear Hall effect sensors with noise as low as 8 mVp-p, flat temperature coefficient, and bandwidth capability up to 50 kHz. Sensitivity range is programmable from 0.7–1.4 mV/G (A1360), 1.5–4.5 mV/G (A1361), and 4.5–16 mV/G (A1362). Suited for high-frequency current-sensing applications, the devices have a capacitor to ground on the filter pin that can be used to tune the device bandwidth from 50 kHz to <100 Hz. The ratiometic Hall effect sensors provide a voltage output proportional to the applied magnetic field; quiescent output voltage is user-adjustable to 50% (bidirectional) or 10% (unidirectional) of the supply voltage.
Allegro MicroSystems Inc.