SCA3100-D01

SCA3100-D01 VTI Automotive Digital Accelerometer Platform Data Sheet SCA3100-D01 3-AXIS ACCELEROMETER WITH DIGITAL SPI INTERFACE Features • • • • • • • • • • • 3.3V supply voltage ±2g measurement range 3-axis measurement XYZ directions ±70mg offset accuracy over temp range SPI digital interface Enhanced self diagnostics features Size 7.0 x 3.3 x 8.6 mm (w x h x l) Qualified according to the AEC-Q100 standard Package, pin-out and SPI protocol compatible with VTI 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 Applications The SCA3100-D01 is targeted to automotive applications. Typical applications include • Electronic Stability Control (ESC) • Hill Start Aid (HSA) • Electronic Parking Brake (EPB) • Roll Over • Suspension • Inclination • Industrial applications General Description The SCA3100-D01 is a three axis accelerometer component based on VTI capacitive 3D-MEMS technology. The component integrates high accuracy micromechanical acceleration sensing together with a flexible SPI digital interface. The component's Dual Flat Lead (DFL) housing guarantees robust operation over the product lifetime. The SCA3100-D01 is designed, manufactured and tested for high stability, reliability and quality requirements of automotive applications. The accelerometer has an extremely stable output over wide range of temperature, humidity and mechanical noise. The component is qualified according to the AEC-Q100 standard and has several advanced self diagnostics features. The DFL housing is suitable for SMD mounting and the component is compatible with the RoHS and ELV directives. The SCA3100-D01 is a part of VTI's digital accelerometer family and is compatible with its single axis accelerometers (SCA8X0 Series) and other multi axis accelerometers (SCA21X0 Series and SCA3100 Series). VTI Technologies Oy www.vti.fi PRELIMINARY - Subject to changes Doc.nr. 82 687 00 A 1/3 Rev.A SCA3100-D01 VTI Automotive Digital Accelerometer Platform Performance Characteristics Vdd=3.3 V and ambient temperature unless otherwise specified. Parameter Condition Min 3.0 Active mode Power down mode Measurement axes (XYZ) Temperature range -40 ... +125 °C Temperature range -40 ... +125 °C 12 bit output +1g ... -1g range 2-complement -3dB frequency Typ 3 0.12 -2 -40 -100 -70 900 -4 -20 0 30 55 5 0.1 2000 50 8 2 1 20 000 4 20 ±3.5 Max 3.6 5 2 125 100 70 Units V mA mA g °C mg mg Count/g % FS mg % Counts Hz mg RMS s Hz pF MHz kV kV g Analog and digital Vdd Current consumption Measurement range Operating temperature Offset total error A) Offset temperature drift B) Sensitivity Total sensitivity error Linearity error Cross-Axis sensitivity Zero acceleration output Amplitude response C) Noise Power on setup time Output data rate Output load SPI clock rate ESD protection Moisture sensitivity level Mechanical shock A) Human Body Model Charge Device Model IPC/JEDEC J-STD-020C, Level 3 B) C) Includes offset deviation from 0g value including calibration error and drift over lifetime, temperature and supply voltage. Offset drift due to temperature. Value is a relative value and has not to be centered to zero. See figure 4. C/V Analog calibration & ADC DEMUX 1:4 Lowpass Filter Lowpass Filter Lowpass Filter Lowpass Filter Decimation Decimation Coordinate Mapping and Calibration SCK SPI i/f MISO MOSI CSB Decimation Decimation Oscillator & clock Reference NonVolatile Memory Temperature sensor Continuous self test Start-up self test Figure 1. SCA3100-D01 Block diagram VTI Technologies Oy www.vti.fi PRELIMINARY- Subject to changes Doc. Nr. 82 687 00 A 2/3 Rev.A SCA3100-D01 VTI Automotive Digital Accelerometer Platform Z X -Y PIN 1 Y -Y PIN 1 Y -Z Figure 2. Accelerometer measuring directions -X Figure 3. Housing dimensions Figure 4. Frequency response curves Document Change Control Rev. A Date 07.10.06 Change Description Preliminary version VTI Technologies Oy www.vti.fi PRELIMINARY- Subject to changes Doc. Nr. 82 687 00 A 3/3 Rev.A