霍尔开关电路175、霍尔元件、霍尔、霍尔ic

ah175 is a single-digital-output hall-effect sensor for high
temperature operation. the device 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 band-gap regulator is used to provide temperature
compensated supply voltage for internal circuits and allows a
wide operating supply range.
while the magnetic flux density (b) is larger than threshold bop,
the out pin turns on (low). if b removed toward brp, the out pin
is latched “on” state prior to b < brp. when b < brp, the out pin
goes into “off ” state.