sca3060 - d01 vti technologies oy 1 / 3 1 / 4 www.vti.fi doc. nr. 82 1040 00 d rev d sca30 60 - d01 digital low power ac celerometer for automotive appli cations features 3,0 v C 3.6 v supply voltage 2 g measurement range 16 bit spi digital interface selectable frequency response very low current consumption (3.3 v, 150 a ty p) 64 samples/axis buffer memory for output acceleration data and advanced features enable significant power and resource savings at system level interrupt signal triggered by motion size 7.6 x 3.3 x 8.6 mm (w x h x l) proven capacitive 3d - mems technology high shock durability rohs compliant / lead free soldering aec q - 100 qualified applications sca30 60 - d01 is targeted to automotive applications such as inertial navigation vehicle alarms inclination sensing motion activation black box syst ems figure 1 sca30 6 0 - d01 block diagram data s heet int c/v an a log calibrat i on & adc d e - mux 1:3 low - pass filter low - pass filter low - pass filter decima tion decimation dec i mation coordinate mapping and calibrat i on oscill a tor & clock motion detector non - vola tile memory reference spi i/f control & int sck m i so mosi csb ring buffer temperat u re se n sor
sca3060 - d01 vti technologies oy 2 / 3 2 / 4 www.vti.fi doc. nr. 82 1040 00 d rev d performance c haracteristics 1) parameter condition units min typ 1 ) max analog and digital vdd 3.0 3.3 3.6 v operating temperature ** - 40 - 10 5 c current consumption * reset 2 ) - <9 - a measurement / md mode - 150 - a acceleration range * 3 ) nominal - 2 - g total offset error 4) - 40 ... +105 c - 200 200 +200 mg sensitivity * 6) - 1 000 - count/g total sensitivity error * - 2% 4% % non - linear ity ** 7) - 1 3% % fs cross - axis sensitivity ** 8 ) - 3 - % bandwidth ** 9 ) measurement mode 9 hz wide band mode 35 hz noise ** 10 ) measurement mode 9 mg rms wide band mode - 16 - mg rms output data rate ** measurement mode 50 hz wi de band mode 100 hz start up time ** 11 ) - 200 - m s output load ** - - 35 pf spi clock rate ** - - 325 k hz * 100% t ested in production ** qualified during product validation 1 ) typical values are not guaranteed. 2 ) includes the current through th e internal 400 k pull - up resistor connected to digital i/o vdd. 3 ) range defined as . the measuring range is tested on sensing element level. fs = 2g. 4 ) includes effects over supply voltage, temperature and life time 6) sensitivity = {count(+1g) - count( - 1g)}/2 [ count/g]. 7 ) from straight line through sensitivity calibration (+1g, - 1g) points. 8 ) the cross - axis sensitivity determines how much acceleration, perpendicular to the measuring axis, couples to the output. the total cross - axis sensitivity is the geometric sum of the sensitivities of the two axes which are perpendicular to the measuring axis. the angular alignment error between x, y and z axis is in cluded into the cross axis sensitivity . 9) frequency response s according to figure 4 . 10 ) average n oise /axis over the measurement bandwidth defined as , where nx, n y and nz are the measured signal's standard deviation due to noise in x, y and z di rections. 11 ) settling error less than 1% of fs . g z y x 2 2 2 2 ) 2 2 2 ( 3 1 z n y n x n
sca3060 - d01 vti technologies oy 3 / 3 3 / 4 www.vti.fi doc. nr. 82 1040 00 d rev d figure 2 accelerometer measuring directions figure 3 housing dimensions figure 4 frequency response of sca306 0 - d01 in m easurement mode (left) and in wide band mode (right)
sca3060 - d01 vti technologies oy 4 / 3 4 / 4 www.vti.fi doc. nr. 82 1040 00 d rev d document change control author approved by tommi vilenius depar t ment/role product manager rev. date change description author re viewed by ecn 0 5.12.2008 preliminary release a1 23.1.2009 initial release tvi vnu, tos b1 4.3.2009 changes to low power component c 21.9.2009 performance values updated, pin naming updated. tvi tos, jl d 21.11.2011 pr oduct description modifie d tvi jup
|
