AH1751

Datasheet

AH1751
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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 and Benefits

• 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

Applications

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

Part Number	AH1751
Description	Single Hall Effect Latch
Process	Bipolar
Operating Voltage V	3.5 to 20
Output Current Ave	50mA
Operating Point Bop Gauss	5/70
Release Point Brp Gauss	-70/-5
Operating Ambient Temperature Range °C	-40 to +125

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