1.29 x 0.99 x 0.53 mm3, WLCSP
3-axis vertical Hall sensor, I2C interface
Dynamic Range: ± 30 mT
Resolution: 2.5 uT/LSB
Output Data Rate: 500 Hz, 8~16-bit adjustable output
360° absolute output, calculated on the chip
Programmable switch function
Download Datasheet
iSentek IST8309 is a 3D digital linear Hall sensor designed to measure magnetic flux intensity. It is an integrated chip with magnetic sensors and a control ASIC with 16-bit ADC output. IST8309 provides an I2C digital output with fast mode plus up to 400 kHz. Its wide dynamic range, high resolution, and compact form factor make it ideal for smartphones, wearables, and IoT devices.
Features
- Single chip 3-axis linear Hall sensor with digital output
- 3-axis programmable magnetic switch function
- INTB pin for event notification (Magnetic switch, DRDY, Overflow)
- Compact form factor, 1.29 x 0.99 x 0.53 mm3, 5-pin WLCSP-BGA package
- I2C bus supports fast mode plus up to 400 kHz
- Two slave addresses
- High dynamic range of maximum ± 30 mT
- High resolution of maximum 2.5 uT/LSB
- Absolute 360 degree angle output
- High output data rate of maximum 500 Hz
- 8~16-bit adjustable data output
- Operation Temperature: -40~85°C
- Built-in oscillator for internal clock source
- Power-on Reset circuit
Block Diagram

Applications
- Magnetometer for external magnet detection
- Displacement detection
- Foldable device angle detection
- Angle sensor application