SCA2120-D06 Murata

SCA2120-D06 Murata Automotive Digital Accelerometer Platform Data Sh eet SCA2120-D06 2-AXIS HIGH PERFORMANCE ACCELEROMETER WITH DIGITAL SPI INTERFACE Features Applications 3.3V supply voltage SCA2120-D06 is targeted to automotive applications 2 g measurement range with high stability requirements. Typical applications 2-axis measurement YZ directions include 30mg offset accuracy over temp range Electronic Stability Control (ESC) Internal temperature sensor Hill Start Aid (HSA) SPI digital interface Electronic Parking Brake (EPB) Enhanced self diagnostics features Roll Over Size 7.6 x 3.3 x 8.6 mm (w x h x l) Suspension Qualified according to AEC-Q100 standard Inclination Package, pin-out and SPI protocol compatible Industrial applications with Murata digital accelerometer product family RoHS compliant Dual Flat Lead (DFL) plastic package suitable for lead free soldering process and SMD mounting Proven capacitive 3D-MEMS technology General Description SCA2120-D06 is a high performance two axis accelerometer component based on Murata capacitive 3D-MEMS technology. The component integrates high accuracy micromechanical acceleration sensing together with a flexible SPI digital interface. Dual Flat Lead (DFL) housing of the component guarantees robust operation over the product lifetime. SCA2120-D06 is designed, manufactured and tested for high stability, reliability and quality requirements of automotive applications. The accelerometer has extremely stable output over wide range of temperature, humidity and mechanical noise. The component is qualified against AEC-Q100 standard and has several advanced self diagnostics features. The DFL housing is suitable for SMD mounting and the component is compatible with RoHS and ELV directives. SCA2120-D06 is a part of Murata digital accelerometer family and fully compatible with single axis accelerometers (SCA800 series) and other multi axis accelerometers (SCA2100 series and SCA3100 series). Murata Electronics Oy 1/3 www.muratamems.fi Doc.nr. 82 686 00 E SCA2120-D06 Performance Characteristics Vdd=3.3 V and ambient temperature unless otherwise specified. Parameter Condition Min Typ Max Units Analog and digital Vdd 3.0 3.6 V Current consumption Active mode 3 5 mA Power down mode 0.05 mA Measurement range Measurement axes (YZ) -2 2 g Operating temperature -40 125 C A) Offset total error Temperature range -40 ... +125 C -70 70 mg RT 25 C 5C -40 40 mg Offset temperature Temperature range -40 ... +125 C -30 30 mg B) dependency Sensitivity 12 bit output 900 Count/g Total sensitivity error -4 4 % FS Linearity error +1g ... -1g range -20 20 mg +2g...+1g, -1g...-2g -40 40 mg Cross-Axis sensitivity 3.5 % Zero acceleration output 2-complement 0 Counts C) Amplitude response -3dB frequency 30 55 Hz Noise 5 mg RMS Power on setup time 0.1 s Output data rate 2000 Hz Output load 50 pF SPI clock rate 8 MHz ESD protection Human Body Model 2 kV Charged Device Model 1 kV Moisture sensitivity level IPC/JEDEC J-STD-020C, Level 3 Mechanical shock 20 000 g ID register value Customer readable ID register (27hex) 88 A) Includes offset deviation from 0g value including calibration error and change over lifetime, temperature and supply voltage. B) Offset dependency due to temperature. Value is a relative value and has not to be centered to zero. C) See figure 4. SCK Lowpas s Decimation Coordinate Analog Filter Mapping calibration MISO C/V DE - SPI and & ADC MUX Decimation i/f Lowpas s Calibration 1:4 MOSI Filter CSB Lowpas s Decimation Filter Decimation Lowpass Filter Oscillator Non- Start-up Reference Temperature Continuous & Volatile sensor self test self test clock Memory Figure 1. SCA2120-D06 Block diagram Murata Electronics Oy 2/3 www.muratamems.fi Doc. Nr. 82 686 00 E