DESCRIPTION

· The Si7201/2/3/4/5/6 family of Hall effect magnetic sensors integrates a chopper-stabilized Hall element, low-noise analog amplifier, 13-bit ADC, and flexible comparator circuit.
· It features digital signal processing for precise temperature and offset drift compensation.
· Available in 3-pin SOT23, 5-pin SOT23, and TO-92 packages, with options for power, ground, output, disable(sleep), and tamper output pins.

FEATURES

· High-sensitivity Hall effect sensor with a maximum B OP operating point of <1.1 mT.
· Omnipolar or unipolar operation with integrated DSP for temperature and offset drift compensation.
· Low current consumption of 400 nA at 5 samples per second.
· Selectable sensitivity, hysteresis, output polarity, and sample rate.
· Sensitivity drift < ±3% over temperature.
· Wide power supply voltage range from 1.71 to 5.5 V and 3.3 to 26.5 V.
· Selectable output options including open-drain and digital high/low output.
· Industry-standard packaging in SOT-23 and TO-92.

APPLICATIONS

· Replacement of reed switches in consumer and security applications.
· Position sensing for HVAC knobs, door locks, windows, and other mechanical devices.
· BLDC motor control and camera image stabilization, zoom, and autofocus.
· Fluid level sensing and control knobs and selector switches.
· General-purpose mechanical position sensing.