
SCA3000-E01
VTI Technologies Oy 2/4
www.vti.fi Doc. Nr. 8255900B.01 Rev.B.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 12 - <9 - µA
Active - 120 145 - 150 - µA
Motion Detection
mode
- 120 145 - 150 - µA
Acceleration range * 4) Nominal -3 - 3 - ± 3 - g
Offset calibration error * 5) Z-axis +1g position -40 - 40 - ± 100 - mg
Offset temperature error ** 6) -40 ... +85 °C -3 ±0.8 3 - ±0.8 - mg/°C
Sensitivity * 7) - 1000 - - 1000 - Count/g
Sensitivity calibration error * -1.5 - +1.5 - ± 1 - %
Sensitivity temperature error
** 8)
-40 ... +85 °C -0.02 ±0.01 0.02 - ±0.01 - %/°C
Non-Linearity ** 9) -3 ±1 3 - ±1 - % FS
Cross-Axis sensitivity ** 10) - ±3 - - ±3 - %
Bandwidth ** 11) Measurement mode 28 35 42 - 35 - Hz
Narrow band
measurement mode
7 9 11 - 9 - Hz
Noise ** 12) Measurement mode - 9 18 - 9 - mg RMS
Narrow band
measurement mode
- 5 10 - 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 ** 13) Measurement mode - 35 70 - 35 - ms
Narrow band
measurement mode
- 200 400 - 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 kΩ pull-up resistor connected to digital I/O Vdd.
4) Range defined as g
z
y
x3
2
2
2≤++ . The measuring range is tested on sensing element level. FS = 3g.
5) Soldering process can cause offset shift which is typically less than 75 mg. Please see
TN54_SCA3000_Assembly_Instructions for further details.
6) Offset temperature error = {Count(0g)-Offset} / Sensitivity [ g ]. Sensitivity = Calibrated sensitivity.
Offset= Calibrated offset.
7) Sensitivity = {Count(+1g) - Count(-1g)}/2 [Count/g].
8) Sensitivity temperature error = {[Count(+1g)-Count(-1g)]/2 - Sensitivity} / Sensitivity x 100% [%].
Sensitivity = Calibrated sensitivity.
9) From straight line through sensitivity calibration (+1g, -1g) points.
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 which are perpendicular to the measuring axis. The angular alignment error
between X, Y and Z axis is included into the cross axis sensitivity.
11) Frequency responses according to Figure 3 and Figure 4.
12) Average noise/axis over the measurement bandwidth defined as )
2
2
2
(
3
1z
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.
13) Settling error less than 1% of FS.