AH1751-PG-A-A

AH1751-PG-A-A is a single-digital-output bipolar hall-effect sensor for high-temperature operation. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier to amplify the 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. When the magnetic flux density (B) is larger than the threshold Bop, the OUT pin turns on (low). If B is removed toward Brp, the OUT pin is latched “on” state prior to B < Brp. When B < Brp, the OUT pin goes into off state. Typical applications include rotor position sensing, current switch, encoder, and RPM detection.

• 3.5V to 20V DC operation voltage
• Open collector pre-driver
• Chip power reverse-connection protection
• Output saturation voltage is 200mV typ at VCC=12V, OUT ”ON”, IO=50mA, TA=+25°C
• Supply current is 3.5mA typ at VCC=12V, OUT ”OFF”, TA=+25°C
• Bops (south pole to brand side) is 70gauss max at operation point, TA=+25°C, VCC=4V to 20V
• Brps (south pole to brand side) is -5gauss max at release point, TA=+25°C, VCC=4V to 20V
• 50mA output sink current
• SIP-3 package
• Operating temperature range from -40 to +125°C