DESCRIPTION

· The Si720x family of Hall effect magnetic sensors from Silicon Labs integrates a chopper-stabilized Hall element, low-noise analog amplifier, 13-bit ADC, and flexible comparator circuit.

· Utilizes CMOS design and digital signal processing for precise temperature and offset drift compensation.

· Offers industry-leading sensitivity, suitable for larger air gaps and smaller magnets.

· Available in 3-pin SOT23, 5-pin SOT23, and TO-92 packages, featuring power, ground, and output pins, with additional disable and tamper output pins in 5-pin versions.

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 power consumption of 400 nA at 5 samples per second.

· Selectable sensitivity, hysteresis, output polarity, and sample rate with sensitivity drift < ±3% over temperature.

· Wide power supply voltage range from 1.71 to 5.5 V and 3.3 to 26.5 V.

· Output options include open-drain and digital high/low outputs.

· Available in industry-standard SOT-23 and TO-92 packages.

APPLICATIONS

· Replacement of reed switches in consumer and security applications.

· Position sensing in HVAC knobs, door locks, windows, and other mechanical devices.

· BLDC motor control, camera image stabilization, zoom, and autofocus.

· Fluid level sensing, control knobs, selector switches, and general-purpose mechanical position sensing.