SCA1020-D06

Murata Electronics Oy

8/19

www.muratamems.fi

Doc. Nr. 8263900

Rev.B

T4: T stab.

(15

= T2+T3

Stabilization time, when

self test is released.

70

ms

T5: T r

(15

Rise time during self test,

when Vout reach V2

10

ms

V2

(15

Vout during self test

4.75

V

V3

(15, 16

Stabilized output voltage

after self-test is released.

0.95*V

1

V1

1.05 *

V1

Note 1.

The measuring range is limited only by the sensitivity, offset and supply voltage rails of the device

Note 2.

1g = 9.82m/S

2

Note 3.

Offset specified as Voffset = Vout(0g) [ V ]. See note 13.

Note 4.

Sensitivity specified as Vsens = {Vout(+1g) - Vout(-1g)}/2

[ V/g ]. See note 13

Note 5.

Offset error specified as Offset Error = {Vout(0g) - Vdd/2} / Vsens [ g ]

Vsens = Nominal sensitivity

Vdd/2 = Nominal offset

See note 13.

Note 6.

Sensitivity error specified as Sensitivity Error = { [Vout(+1g) - Vout(-1g)] / 2 - Vsens} / Vsens x 100% [% ]

Vsens = Nominal sensitivity

See note 13.

Note 7.

From straight line through -1g and +1g.

Note 8.

The frequency response is determined by the sensing element’s internal gas damping. The output has true DC

(0Hz) response.

Note 9.

The ratiometric error is specified as.

RE

Vout

Vx

V

Vx

Vout

V

=

×

−

×





















100%

1

5 00

5

(@

)

.

(@

)

Note 10. 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 that are

perpendicular to the measuring axis.

Note 11. In addition, supply voltage noise couples to the output due to the ratiometric nature of the accelerometer.

Note 12. The self-test will increase the output voltage. The output will go to Vdd rail. The purpose of the self-test is to check

out the total functionality of the sensor. It is not meant for calibration or auto zeroing.