Diodes Incorporated AH3722A & AH3724A Hall-Effect Latch ICs

Diodes Incorporated AH3722A and AH3724A Hall-Effect Latch ICs are designed for various applications, including brushless DC motors, flow meters, linear encoders, and position sensors. The Diodes Incorporated devices support a broad range of applications, operating across a supply range of 3.0V to 28V. The ICs have a chopper-stabilized architecture and internal bandgap regulator, ensuring a temperature-compensated supply for its circuits. Additionally, the ICs include a Zener clamp on the supply and output with overcurrent limit and a Zener clamp for enhanced robustness and protection.

Features

Bipolar latch (south pole: on, north pole: off)
3.0V to 28V operating voltage range
BOP and BRP of 25G to 40G and -25G to -40G typical high sensitivity
Internally pullup resistor on the output pin
Resistant to physical stress
Output overcurrent limit
Chopper stabilized design provides superior temperature stability, minimal switch point drift, and enhanced immunity to stress

Good RF noise immunity
Reverse blocking diode and Zener clamp on supply
-40°C to +125°C operating temperature
8kV high ESD HBM
Industry-standard SC59, SOT23 (type S), SIP-3 (ammo pack), and SIP-3 (bulk pack) packages
Totally lead-free and fully RoHS compliant
Halogen and antimony-free, green device

Applications

Brushless DC motor commutation
Revolution per minute (RPM) measurement
Flow meters
Angular and linear encoders and position sensors

Contactless commutation, speed measurement, and angular position sensing/indexing in consumer home appliances, office equipment, and industrial applications

Diodes Incorporated AH3722A & AH3724A Hall-Effect Latch ICs

Features

Applications

Typical Applications Circuit

Block Diagram

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