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.

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
• SIP3, SC59 and SC59R (Commonly known as SOT23 in Asia): Available in “Green” Molding Compound (No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)

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