SILICON LABS SI7210-B-02-IV

The Si7210 Hall-effect magnetic sensor family combines a chopper-stabilized Hall element with a low-noise analog amplifier, a 13-bit ADC, and an I²C interface. Leveraging proven CMOS design technology with integrated digital signal processing, it delivers precise compensation for temperature and offset drift. Compared to existing Hall-effect sensors, it offers industry-leading sensitivity, enabling operation with larger air gaps and smaller magnets. The integrated 13-bit high-resolution ADC achieves high output linearity and maximum measurement accuracy in ultra-low-noise environments. A bidirectional I²C interface provides full configuration of the Hall-effect sensor operate and release points, and the 13-bit magnetic field strength value can be read via this I²C interface at any time.

• High-sensitivity Hall-effect sensor
• Adjustable full-scale range (standard ranges: ±20mT and ±200mT full-scale)
• Integrated digital signal processing with compensation for temperature and offset drift
• High-accuracy 13-bit signal path
• Output bandwidth up to 20kHz
• Sensitivity drift < ±5% over 0 - 70°C temperature range
• Digital I²C interface
• 4 selectable I²C addresses
• Optional digital alert output
• Optional ratiometric analog output
• Wide supply voltage range (1.7 to 5.5V)
• Temperature sensor data available via I²C (±1°C accuracy)
• Sleep mode current consumption as low as 50 nA
• Industry-standard packages
• Surface-mount SOT-23 package
• 1.4×1.6mm 8-pin DFN package (coming soon)

• Mechanical position sensing in consumer and industrial applications
• Reed switch replacement
• Liquid level measurement
• Speed sensing
• Utility meters
• Control knobs and selector switches