MMC5616WA

By MEMSIC Inc.

±30 Gauss, Monolithic, High Performance, 3-axis Magnetic Sensor with FIFO FEATURES • Monolithic integrated 3-axis AMR magnetic sensor and electronic circuits requiring fewer external components • Superior Dynamic Range and Accuracy: ✓ ±30 G FSR ✓ 20bits operation mode ✓ 16bits resolution with FIFO ✓ 0.0625mG per LSB resolution ✓ 2 mG total RMS noise ✓ Enables heading accuracy of 1º • Sensor true frequency response up to 1KHz • Ultra-Small Wafer Level Package 0.82x0.82x0.4 mm • On-chip automatic degaussing with built-in SET/RESET function ✓ Eliminates thermal variation induced offset error (Null field output) ✓ Clears the residual magnetization resulting from strong external fields • On-chip sensitivity compensation • On-chip temperature sensor • Selftest signal available • Data_ready Interrupt (I3C only) • Low power consumption • 1 μA power down current • I2C slave, FAST (≤400 KHz) mode • I3C interface, per MIPI spec V1.0 • 1.7V to 3.6V wide range single power supply • 1.2V compatible I2C interface • 1.2V compatible I3C interface • RoHS compliant APPLICATIONS • Electronic Compass & GPS Navigation • Position Sensing DESCRIPTION The MMC5616WA is a monolithic complete 3-axis AMR magnetic sensor with on-chip signal processing and integrated digital bus (I2C fast mode and I3C interface), the device can be connected directly to a microprocessor, eliminating the need for A/D converters or timing resources. It can measure magnetic fields within the full scale range of ±30 Gauss (G), with up to 0.0625mG per LSB resolution at 20bits operation mode and 2mG total RMS noise level, enabling heading accuracy of 1º in electronic compass applications. Contact MEMSIC for access to advanced calibration and tilt-compensation algorithms. An integrated SET/RESET function provides for the elimination of error due to Null Field output change with temperature. In addition, it clears the sensors of any residual magnetic polarization resulting from exposure to strong external magnets. The SET/RESET function can be performed for each measurement or periodically as the specific application requires. The MMC5616WA is in wafer level package with an ultra-small size of 0.82x 0.82 x 0.4 mm and with an operating temperature range from -40C to +85C. The Anisotropic Magneto-Resistive (AMR) sensors are special resistors made of permalloy thin film deposited on a silicon wafer. During manufacturing, a strong magnetic field is applied to the film to orient its magnetic domains in the same direction, establishing a magnetization vector. Subsequently, an external magnetic field applied perpendicularly to the sides of the film causes the magnetization to rotate and change angle. This effect causes the film’s resistance to vary with the intensity of the applied magnetic field. The MEMSIC AMR sensor is incorporated into a Wheatstone bridge configuration to maximize Signal to Noise ratio. A change in magnetic field produces a proportional change in differential voltage across the Wheatstone bridge However, the influence of a strong magnetic field (more than 30 G) in any direction could upset, or flip, the polarity of the film, thus changing the sensor characteristics. A strong restoring magnetic field must be applied momentarily to restore, or set, the sensor characteristics. The MEMSIC magnetic sensor has an on-chip magnetically coupled strap: a SET/RESET strap pulsed with a high current, to provide the restoring magnetic field. Package type: W WLP package, RoHS compliant Performance Grade: A Temp compensated All parts are shipped in tape and reel packaging with 10000pcs (or 5000pcs per requested) per 7” reel.