MMC5983MA

h ±8 Gauss, High Performance 3-axis Magnetic Sensor MMC5983MA FEATURES • Fully integrated 3-axis magnetic sensor and electronic circuits requiring fewer external components • Superior dynamic range and accuracy: ✓ ±8G FSR ✓ 18bits operation ✓ 0.4mG total RMS noise ✓ Enables heading accuracy of 0.5º • Max output data rate of 1000Hz • Industrial standard low profile package 3.0mm x 3.0mm x 1.0mm • 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 • Data_Ready Interrupt • Low power consumption • 1µA power down current • I2C Slave, FAST(≤400KHz) mode • 3.0V single low power supply • SPI interface available • RoHS compliant APPLICATIONS • Electronic Compass & Navigation • Position Sensing • General Purpose Magnetic Field Measurements 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. Information furnished by MEMSIC is believed to be accurate and reliable. However, no responsibility is assumed by MEMSIC for its use, or for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of MEMSIC. MEMSIC MMC5983MA Rev. A FUNCTIONAL BLOCK DIAGRAM 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 0.5ºin 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. ©MEMSIC, Inc. One Technology Drive, Suite 325, Andover, MA01810, USA Tel: +1 978 738 0900 Fax: +1 978 738 0196 www.memsic.com Page 1 of 20 2/25/2019 SPECIFICATIONS (Measurements @ 25C, unless otherwise noted; VDD=3.0V unless otherwise specified) Parameter Field Range (Each Axis) Supply Voltage Conditions Min Typ 8 Total applied field Units G VDD 2.8 3.0 3.6 V VDDIO(I2Cinterface and INT) 2.8 3.0 3.6 V 5.0 ms µA µA µA µA µA Supply Voltage Rise Time Supply Current1,2 (7 measurements/second) Max BW=00 BW=01 BW=10 BW=11 450 225 112.5 32 1.0 Power Down Current2 Operating Temperature -40 105 C Storage Temperature Linearity Error2 (Best fit straight line) Hysteresis2 -55 125 C FS=±8G Happlied=±4G 3 sweeps across ±8G 0.1 %FS 0.01 %FS Repeatability Error2 3 sweeps across ±8G 0.1 %FS 1.0 Alignment Error 8 G % mG mG mG mG Bits Hz Hz Hz Hz Hz Degrees % With16bits operation 4096 Counts/G With18bits operation -40~105 C Delta from 25 C, 8 G 16384 Counts/G 5 % 0.5 G With16bits operation 32768 Counts With18bits operation -40~105 C Delta from 25 C 131072 Counts 3 mG 0.8 C/Count 10 G BW=00 BW=01 BW=10 BW=11 Output Resolution Max Output data rate2 BW=00 BW=01 BW=10 BW=11 BW=11(CM_Freq=111) Heading Accuracy3 Sensitivity Accuracy4,5 Sensitivity Change Over Temperature Null Field Output5 Null Field Output Change Over Temperature using SET/RESET Temperature Sensor Output Disturbing Field6 Maximum Exposed Field 10,000 1 SET/RESET Repeatability 1. 2. 3. 4. 5. 6. Degrees 0.8 0.4 0.6 0.8 1.2 18 50 100 225 580 1000 1.0 5 Transverse Sensitivity Total RMS Noise2 3.0 G mG Supply current is proportional to how many measurements performed per second. Based on 3lots characterization result. MEMSIC product enables users to utilize heading accuracy to be 1.0 degree typical when using MEMSIC’s proprietary software or algorithm. Sensitivity of the orthogonal axes is analytically derived from raw data and is subsequently processed by MEMSIC software drivers. Based on shipment test result. This is the magnitude of external field that can be tolerated without changing the sensor characteristics. If the disturbing field is exceeded, a SET/RESET operation is required to restore proper sensor operation. MEMSIC MMC5983MA Rev. A Page 2 of 20 2/25/2019 DIGITAL INTERFACE (VIO=3.0V) Symbol VIH VIL VHYS IIL VOH VOL Parameter (Units) High Level Input Voltage (Volts) Low Level Input Voltage (Volts) Hysteresis of Schmitt Trigger Input (Volts) Input Leakage, All Inputs (uA) High Level Output Voltage (Volts) Low Level Output Voltage (Volts) Minimum 0.7*VIO Typical Maximum 0.3*VIO 0.2 -10 0.8*VIO 10 0.2*VIO I2C INTERFACE I/O CHARACTERISTICS (VIO=3.0V) Parameter Symbol Test Condition Min. Typ. Max. Unit Logic Input Low Level VIL -0.5 0.3* VIO V Logic Input High Level VIH 0.7*VIO VIO V Hysteresis of Schmitt Input Vhys 0.2 Logic Output Low Level VOL Input Leakage Current Ii SCL Clock Frequency fSCL START Hold Time tHD;STA 0.6 µS START Setup Time tSU;STA 0.6 µS LOW period of SCL tLOW 1.3 µS HIGH period of SCL tHIGH 0.6 µS Data Hold Time tHD;DAT 0 Data Setup Time tSU;DAT 0.1 Rise Time tr From VIL toVIH 0.3 µS Fall Time Bus Free Time Between STOP and START STOP Setup Time tf From VIH toVIL 0.3 µS 0.1VIO