The HMC5843 is a surface mount multi-chip module designed for low field magnetic sensing with a digital interface. It is suitable for applications such as low cost compassing and magnetometry. The HMC5843 utilizes Honeywell's AMR technology, which provides precise in-axis sensitivity and linearity, allowing measurement of both direction and magnitude of Earth's magnetic fields.
The Honeywell HMC5843 is a surface‑mount multi‑chip module that combines anisotropic magnetoresistive sensors with an ASIC to provide a 3‑axis digital compass. It offers low‑voltage operation (2.5‑3.3 V), I2C communication, and a compact 4 × 4 × 1.3 mm LCC package, making it suitable for consumer electronics, automotive navigation, and magnetometer applications.
The datasheet includes full electrical specifications, pin configurations, package drawing, power‑management modes, register map, and I2C communication protocol. It also describes recommended PCB layout, soldering guidelines, and self‑test procedures for verifying sensor performance.
| Field Range | ±6 Oe (±0.6 gauss) |
|---|---|
| Output Data Rate | 50 Hz (typical 10 Hz) |
| Operating Temperature (ambient) | -30 °C to 85 °C |
| Package Size | 4.0 × 4.0 × 1.3 mm LCC |
| Weight | 50 mg |
Yes, the device can run on a single AVDD supply; VREN tied to AVDD enables the internal voltage regulator for single‑supply operation.