SCA1000-D01 Ver la hoja de datos (PDF) - Murata Manufacturing
Número de pieza
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SCA1000-D01 Datasheet PDF : 18 Pages
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SCA1000-D01
1 General description
The SCA1000 accelerometer consists of two silicon bulk micro machined sensing element
chips and a signal conditioning ASIC. The chips are mounted on a pre-molded package and
wire bonded to appropriate contacts. The sensing elements and ASIC are protected with
silicone gel and lid. The sensor has 12 SMD legs (Gull-wing type).
1.1 Block diagram
a sensing element
x
SC
SC filter1
C/V DAC
SC
gain
SC
SC filter2
DAC
SC
sample and hold
fail_det SC
S/H
pfilter
CSB
SCK
MOSI
ST_X/Test_in
ST_Y
interface+control logic+EEPROM BG ADC DAC
agnd por OSC clk gen HV pump
VDD
VSS
a sensing element
y
SC
SC filter1
C/V DAC
SC
gain
SC
SC filter2
DAC
SC
sample and hold
fail_det SC
S/H
pfilter
X_Ext_C
X_OUT
MISO
Y_Ext_C
Y_OUT
Figure 1. Block diagram of the SCA1000
1.2 SCA1000 family Accelerometer Features
• Single +5V supply
• Two ratiometric analog outputs in relation to supply voltage (Vdd = 4.75....5.25V)
• Wide load driving capability
• Serial Peripheral Interface (SPI) compatible
• Provides digital output for both channels
• Supports testing and programming
• Non-volatile programming features
• Factory programmable filter settings ( 400Hz, 1 kHz, WB, Ext_C )
• Offset and sensitivity calibration
• Linear temperature compensation
• Enhanced failure detection features
• True self test by deflecting the sensing elements’ proof mass by electrostatic
force. Deflection voltage is adjustable with two memory bits for both channels.
The self-test is channel specific, and separately activated for both channels by
digital on-off commands via dedicated pins or via SPI bus.
• Continuous sensing element interconnection failure check
Murata Electronics Oy
www.muratamems.fi
Doc. Nr. 8225700
3/18
Rev.C
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