AH174

AH174 is a single-digital-output Hall-effect sensor for high temperature operation. The AH174 includes an on-chip Hall voltage generator for magnetic sensing, an amplifier to amplify Hall voltage, and a comparator to provide switching hysteresis for noise rejection, and an open-collector output pre-driver.

An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range in AH174. While the magnetic flux density (B) is larger than threshold Bop, the OUT pin turns off (High).If B removed toward Brp, the OUT pin is latched "off" state prior to B < Brp. When B < Brp, the OUT pin go into " on " state.