SCA1000-N1000070
Accelerometer
FEATURES
BENEFITS
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Silicon 3D-MEMS sensor
Dual axis X-Y measurement
±4 g range
Over damped sensing element to control frequency response
Advanced failure detection
Lead-free reflow solderable lead free component
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Excellent long term stability
Highly damped sensing element
Outstanding shock durability
APPLICATIONS
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Inclination measurement in high vibration environ-
ment
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Artificial horizon
For customized product, please contact VTI Technologies
ENVIRONMENTAL CHARACTERISTICS
Parameter
Condition
Min
Typ.
Max
Units
Operating Temperature Range
Storage Temperature Range
Shock Survival
-40
-55
125
125
°C
°C
g
20 000
ELECTRICAL CHARACTERISTICS
Parameter
Condition
Min
Typ.
Max
Units
Supply voltage (1
4.75
5
5.25
V
mA
kΩ
nF
Current consumption
Analog Output load
4.5
Resistive Vout to Vdd or GND
Capacitive
10
20
SPI clock frequency
AD conversion time
Data transfer time
500
kHz
µs
150
38
@500 kHz clock
µs
PERFORMANCE CHARACTERISTICS
Parameter
Condition
SCA1000-N1000070
Units
Measuring range
±4
X-Y
g
Measuring direction
Zero point (2
See “Measuring Directions”
Mounting position
-40…+125 °C
Vdd/2
±60
0.55
±2.5
±80
±160
3.5
V
mg
V/g
%
Zero point error over temperature
Sensitivity (3
@ room temperature
-40…+125 °C
Sensitivity error over temperature
Typical Non-linearity (7
Range = -3 g...+3 g
Range = -4 g...+4 g
@ room temperature
KP, 20 dB/decade
Vdd = 4.75...5.25 V
From DC...80 Hz
FS
mg
mg
%
Cross-axis sensitivity (4
Frequency response –3dB point (5
Ratiometric error (6
115±55
2
Hz
%
Output noise density, typical
Digital output resolution
50
µg/ Hz
Bits
11
VDD = 5.00V, UNLESS OTHERWISE SPECIFIED
Note 1
Note 2
Note 3
Note 4
100 nF supply by-pass capacitor is needed.
Zero point specified as Voffset = Vout(0 g)
Sensitivity specified as Vsens = {Vout(+1 g) - Vout(-1 g)}/2
The cross-axis sensitivity determines how much acceleration inclination, perpendicular to the measuring axis,
couples to the output.
Note 5
The frequency response is determined by the sensing element’s internal gas damping. The output has true DC
(0Hz) response.
Note 6. The ratiometric error is specified as
5.00V
Vx
Vout(@Vx) x
Vout(@5V)
RE = 100% x 1-
Rev. 2 / 16 Aug 2006
VTI Technologies reserves the right to modify this specification without prior to notice.