SS149
Unipolar Hall Switch-Low Sensitivity
Packages
Features and Benefits
– – – – – – – – 3.5V to 24V Operation -40℃ t...
SS149
Unipolar Hall Switch-Low Sensitivity
Packages
Features and Benefits
– – – – – – – – 3.5V to 24V Operation -40℃ to 150℃ Superior temperature operation CMOS technology Low current consumption Chopper-stabilized amplifier stage Open drain output Low sensitivity Small Size-SOT23 3L or SIP 3L both RoHS compliant packages
3 pin SOT23 (suffix SO)
3 pin SIP (suffix UA)
Functional Block Diagram
VDD
Voltage
Regulator
Application Examples
– – – – – – – Automotive, Consumer and Industrial Solid-state switch Brushless DC motor commutation Speed detection Angular position detection Proximity detection Current detector
OUT
Chopper
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Hall Plate
GND
SIP Package Pin 1 – V DD Pin 2 – GND Pin 3 – OUT SOT Package Pin 1 – V DD Pin 2 – OUT Pin 3 – GND
General Description
The SS149 is a unipolar Hall-effect sensor IC fabricated from CMOS technology. The device integrates a voltage
regulator, Hall sensor with dynamic offset cancellation system, small signal amplifier, Schmitt trigger and an open-drain output driver. With suitable output pull up, they can be used with bipolar or CMOS logic circuits.
These Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended temperatures to +150℃, and are more stable with both temperature and supply voltage changes. The unipolar switching characteristic makes these devices ideal for use with a simple bar or rod magnet. Thanks to its wide oper...