HMC5983: 3-Axis Digital Compass IC **General Description:** The Honeywell HMC5983 is a temperature compensated three-axis integrated circuit magnetometer. This surface-mount, multi-chip module is designed for low-field magnetic sensing for applications such as automotive and personal navigation, vehicle detection, and pointing. The HMC5983 includes our state-of-the-art, high-resolution HMC1 1 8X series magnetoresistive sensors plus an ASIC containing amplification, automatic degaussing strap drivers, offset cancellation, and a 12-bit ADC that enables 1 ° to 2° compass heading accuracy. The I²C or SPI serial bus allows for easy interface. The HMC5983 is a 3.0x3.0x0.9mm surface mount 16-pin leadless chip carrier (LCC). The HMC5983 utilizes Honeywell’s Anisotropic Magnetoresistive (AMR) technology that provides advantages over other magnetic sensor technologies. Honeywell’s anisotropic, directional sensors excel in linearity, low hysteresis, null output and scale factor stability over temperature, and with very low cross-axis sensitivity. These sensors’ solid-state construction is designed to measure both the direction and the magnitude of magnetic fields, from milli-gauss to 8 gauss. Honeywell’s Magnetic Sensors are among the most sensitive and reliable low-field sensors in the industry. **FEATURES**: 3-Axis Magnetoresistive Sensors and ASIC in a 3.0x3.0x0.9mm LCC Surface Mount Package Temperature Compensated Data Output and Temperature Output Automatic Offset Compensation 2-Bit ADC Coupled with Low Noise AMR Sensors Achieves 2 milli-gauss Field Resolution I²C (Standard, Fast, High-Speed modes) or SPI Digital Interface Fast 220 Hz Maximum Output Rate Built-in Self Test Low Voltage Operations (2.16 to 3.6V) and Low Power Consumption (100 μA) Built-In Strap Drive Circuits Lead Free Package Construction Wide Magnetic Field Range (+/-8 Oe) Software and Algorithm Support