SCA3000-E01

VTI Technologies Oy

PRELIMINARY - Subject to changes

2/4

www.vti.fi

Doc. Nr. 8255900A.01

Rev.A.01

Performance Characteristics

1)

Typical supply range

2.35 – 2.7 V

Extended supply

range 2.7 – 3.6 V

Parameter

Condition

Min

Typ

2)

Max

Min

Typ

2)

Max

Units

Analog and digital Vdd

2.35

2.5

2.7

-

3.3

-

V

Digital I/O Vdd

Vdd ≥ Digital I/O Vdd

1.7

1.8 / 2.5

2.7

-

3.3

-

V

Operating temperature **

-40

-

85

-40

-

85

°C

Current consumption *

Reset 3)

-

<7

-

<9

-

µA

Active

-

120

-

150

-

µA

Motion Detection

mode

-

120

-

150

-

µA

Acceleration range *

4)

Nominal

-3

-

3

-

± 3

-

g

Offset calibration error *

Z-axis +1g position

-40

-

40

-

± 100

-

mg

Offset temperature error **

5)

-40 ... +85 °C

-

±0.8

-

±0.8

-

mg/°C

Sensitivity *

6)

-

1000

-

-

1000

-

Count/g

Sensitivity calibration error *

-1

-

+1

-

± 1

-

%

Sensitivity temperature error

**

7)

-40 ... +85 °C

-

±0.01

-

±0.01

-

%/°C

Non-Linearity **

8)

-

±1

-

±1

-

% FS

Cross-Axis sensitivity **

9)

-

±3

-

-

±3

-

%

Bandwidth **

10)

Measurement mode

28

35

42

-

35

-

Hz

Narrow band

measurement mode

7

9

11

-

9

-

Hz

Noise **

11)

Measurement mode

-

9

-

9

-

mg RMS

Narrow band

measurement mode

-

5

-

5

-

mg RMS

Output data rate **

Measurement mode

80

100

120

-

93

-

Hz

Narrow band

measurement mode

40

50

60

-

45

-

Hz

Turn on time **

12)

Measurement mode

-

35

-

35

-

ms

Narrow band

measurement mode

-

200

-

200

-

ms

Output load **

-

-

35

-

-

35

pF

SPI clock rate **

-

-

325

-

-

325

kHz

*

100% tested in production

**

Qualified during product validation

1)

The product is factory calibrated at 2.5 V in room temperature.

2)

Typical values are not guaranteed.

3)

Includes the current through the internal 400 k

Ω pull-up resistor connected to digital I/O Vdd.

4)

Range defined as

g

z

y

x

3

2

2

2

≤

+

+

. The measuring range is tested on sensing element level. FS = 3g.

5)

Offset temperature error = {Count(0g)-Offset} / Sensitivity [ g ]. Sensitivity = Calibrated sensitivity.

Offset= Calibrated offset.

6)

Sensitivity = {Count(+1g) - Count(-1g)}/2 [Count/g].

7)

Sensitivity temperature error = {[Count(+1g)-Count(-1g)]/2 - Sensitivity} / Sensitivity x 100% [%].

Sensitivity = Calibrated sensitivity.

8)

From straight line through sensitivity calibration (+1g, -1g) points.

9)

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 included into the cross axis sensitivity.

10)

Frequency responses according to Figure 3 and Figure 4.

11)

Average noise/axis over the measurement bandwidth defined as

)

2

2

2

(

3

1

z

n

y

n

x

n

+

+

, where nx, ny and nz are

the measured signal's standard deviation due to noise in x, y and z directions.

12)

Settling error less than 1% of FS.