General Description
AH1751 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 go into “ off ” state.

Features
*Bipolar Hall Effect Latch Sensor
*3.5V to 20V DC Operation Voltage
*Open Collector Pre-Driver
*50mA Output Sink Current
*Chip Power Reverse-Connection Protection
*Operating Temperature: -40oC~125oC
*Package: SIP3
*SIP3: Available in “Green” Molding Compound (No Br, Sb)
*Lead Free Finish/ RoHS Compliant (Note 1)

Applications
*Rotor Position Sensing
*Current Switch
*Encoder
*RPM Detection

AH1751-P, AH1751-PGA-A, AH1751-PGB-A
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