General Description
AH174 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 bandgap 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 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.

Features
*Bipolar Hall effect latch sensor
*3.5V to 20V DC operation voltage
*Open collector pre-driver
*25mA output sink current
*Chip power reverse-connection protection
*Operating temperature: −40°C ~ +125°C
*Package: SIP3, SOT23

Applications
*Rotor position sensing
*Current switch
*Encoder
*RPM detection

AH174-P-A, AH174A-P-A, AH174B-P-A, AH174C-P-A, AH174D-P-A

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