MMC5983MA

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Model: MMC5983MA

Manufacturer: MEMSIC

Type: Three-axis digital magnetometer (electronic compass sensor)

Package: DFN-8 (2mm × 2mm, ultra-small size)

Operating voltage: 1.71V ~ 3.6V (low voltage design)

Operating temperature: -40°C ~ +85°C (industrial grade)

Communication interface: I²C (standard mode 100kHz, fast mode 400kHz)

Compliance with standards: RoHS, lead-free

Measurement range: ±8 Gauss (software adjustable to ±30 Gauss)

Resolution: 0.0625 mGauss/LSB (18-bit output)

Noise density: 0.4 mGauss/√Hz (typical)

Bandwidth: 1000 Hz (maximum)

Output data rate (ODR): 1 Hz ~ 1000 Hz (programmable)

Current consumption: 150 μA (continuous measurement mode @10Hz)

Start-up time: <1 ms

DESCRIPTION

The MMC5983MA is an AEC-Q100 qualified complete 3-axis magnetic sensor with on-chip signal processing and integrated I2C/SPI bus suitable for use in automotive applications. 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 ±8 Gauss (G), with 0.25mG/0.0625mG per LSB resolution at 16bits/18bits operation mode and 0.4 mG total RMS noise level, enabling heading accuracy of ±0.5º in electronic compass applications. An integrated SET/RESET function provides for the elimination of error due to Null Field output change with temperature. Temperature information from the integrated temperature sensor is available over the I2C Interface. The SET/RESET function can be performed for each measurement, periodically, or when the temperature changes by a predetermined amount as the specific application requires. In addition, the SET/RESET function clears the sensors of any residual magnetic polarization resulting from exposure to strong external magnets. The MMC5983MA is packaged in a low profile LGA package and an operating temperature range from -40°C to +105°C. The MMC5983MA provides an I2C digital output with 400 KHz, fast mode operation, and a 10MHz SPI digital output. 

FEATURES

   1. Fully integrated 3-axis magnetic sensor and electronic circuits requiring fewer external components

   2. Superior dynamic range and accuracy: 

       - ±8G FSR

       - 18bits operation

       - 0.4mG total RMS noise

       - Enables heading accuracy of ±0.5º 

   3. Max output data rate of 1000Hz

   4. Industrial standard low profile package 3.0mm x 3.0mm x 1.0mm

   5. 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

   6. On-chip sensitivity compensation

   7. On-chip temperature sensor

   8. Data_Ready Interrupt

   9. Low power consumption

 10. 1µA power down current

 11. I2C Slave, FAST(≤400KHz) mode

 12. 3.0V single low power supply

 13. SPI interface available

 14. RoHS compliant

APPLICATIONS

   1. Electronic Compass & Navigation

   2. Position Sensing

   3. General Purpose Magnetic Field Measurements

Pin definition (DFN-8 package)

Typical application circuit

   1. Hardware connection example (I²C interface)

          MMC5983MA MCU

           VDD ──────────── 3.3V

           GND ──────────── GND

           SDA ──────────── GPIO2 (pull up 4.7kΩ to VDD)

           SCL ──────────── GPIO3 (pull up 4.7kΩ to VDD)

           INT ──────────── GPIO4 (optional interrupt)

   2. PCB layout recommendations:

       - Keep away from magnetic components: Avoid installation near motors and transformers.

       - Decoupling capacitor: The VDD pin needs to be connected in parallel with a 0.1μF ceramic capacitor (close to the sensor).

The specific data is subject to PDF, and the above content is for reference