General Description
Using BCD process, the AS1786 is designed for
high performance unipolar detection hall-effect
application, such as home appliances, rotor position
sensing, brushless DC motor etc. The hall IC
integrated an on-chip hall voltage generator for
magnetic sensing, a comparator that amplifiers the hall
voltage, hall sensor with dynamic offset cancellation
system, an pull-up resistance, and a Schmitt trigger to
provide switching hysteresis for noise rejection, and a
voltage regulator for operation with supply voltage of
2.8V to 28V. AS1786 is designed to respond to South poles. White the magnetic flux density (B) is larger than
operate point (BOP), the output will be turned on (low),
the output is held until the magnetic flux density (B) is
lower than release point (BRP), then turn off (high). The device is available in SIP-3L and SOT23-3L
Package and is rated over the -40°C to 150°C. the
package is RoHS compliant.
Features
High Performance BCD Process Tech. Input Voltage Range : 2.8V to 28V Resistant to physical stress
Unipolar Latch Operation
High Sensitivity Hall Sensor
High Chopping Frequency
Magnetic Sensitivity (typical)
BOP=150Gauss, BRP=120Gauss
Need Pull-up Resistance
Reverse Voltage Protection: -24V Small Solution Size
RoHS Compliant
SIP-3L and SOT23-3L Packages
-40℃ to +150 ℃Temperature Range
Electric Tools
Automotive, Home appliances, Industrial
Rotor Position Sensing and FlowMeters Brushless DC Motor/Fan
Speed Measurement
Revolution Counting
Valve and Solenoid Status
Proximity Sensing
Tachometers
Magnetic Encoder