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SCA610-E23H1A-1

P1-P3P4-P6P7-P9P10-P12
SCA610-E23H1A
Murata Electronics Oy 4/12
www.muratamems.fi Doc. nr. 82 1525 00 Rev.A
1.3. Offset and sensitivity calibration
Vout offset is calibrated in 0g position:
gVOffset
out
0 [V]
Nominal offset is Vdd/2:
2
dd
nom
V
Offset
[V]
Sensitivity is calibrated as:

g
gVgV
ySensitivit
outout
2
11
[V/g]
Nominal sensitivity is:
2,1
nom
ySensitivit [V/g]
1.4. Error calculations
Total error is the allowed maximum error, which include partial error sources. Total error over
lifetime is specified as a sum of offset and sensitivity errors:
ErrorySensitivitErrorOffsetErrorTotal ___
[mg]
Offset error is specified as:

ySensitivit
V
gVout
ErrorOffset
dd
2
0
_
[mg]
Sensitivity error percent is specified as:

%100
211
%_
nom
nom
ySensitivit
ySensitivitggVoutgVout
ErrorySensitivit
Sensitivity error is specified as:

ySensitivit
ErrorySensitivitgVoutVout
ErrorySensitivit
%_0
_
[mg]
SCA610-E23H1A
Murata Electronics Oy 5/12
www.muratamems.fi Doc. nr. 82 1525 00 Rev.A
1.5. Supply voltage
Usage of external 100 nF power supply bypass capacitor is recommended.
ASIC start-up should be tolerant to noise between Vdd and GND. Recommended power-up ramp is
presented below.
Parameter Min Max
T
1
T
0
+ 0.1 µs
T
2
T
0
+ 100 μs
V
1
−0.3 V 0.5 V
V
2
4.5 V 5.5 V
Supply voltage ramp at startup.
Figure 2. V
DD
Start-up sequence.
T
0
T
1
T
2
supply voltage
V
2
t
V
1
SCA610-E23H1A
Murata Electronics Oy 6/12
www.muratamems.fi Doc. nr. 82 1525 00 Rev.A
1.6. Electrical Connection
The following is minimum requirement for electrical interface to the SCA610. If over-voltage or
reverse polarity protection is needed, please contact VTI Technologies Oy for application
information.
Usage of external minimum 100 nF power supply bypass capacitor is recommended. Maximum
rise time of V
DD
is 100 ms.
If self-test (Pin 6) is not used it should be left floating.
Pins 1, 2, 3, and 5 are left floating.
Figure 3. Electrical connection of SCA610 component.
Pin # Pin Name I/O Function Connection on PCB
1 CLK Float / Not connected
2 C1 Float / Not connected
3 MODE Float / Not connected
4 GND Supply Negative supply voltage (V
SS
) Ground
5 PGM Float / Not connected
6 ST Input Self-test control Float when not used
7 VOUT Output Sensor output voltage Measuring circuit input
8 VDD Supply Positive supply voltage (V
DD
) Vdd (+5V)
GND
Vdd
Min. 100nF
8 7 6 5
1 2 3 4
SCA610
Vout
P1-P3P4-P6P7-P9P10-P12

SCA610-E23H1A-1

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Motion & Position Sensors Accelerometers 1-Axis Accelerometer Analog
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