SCA3000 Series
negative accelerations until a valid acceleration value is read. In Table 4 the maximum and
minimum acceleration register values that are in measuring range (for registers X_LSB … Z_MSB)
for SCA3000-D0x and SCA3000-E0x are presented.
Table 4. Maximum and minimum values in the SCA3000 measuring range.
SCA3000-D01
SCA3000-D02
SCA3000-E01
SCA3000-E02
-
SCA3000-E04
SCA3000-E05
First positive
[mg]
dec
bin
-
-
-
acceleration value
out of range
3072
3072
3072
3072
0110 0000 0000 0xxx
2303.25 mg
3071
0110 0000 0000 0xxx
3071 mg
3071
0110 0000 0000 0xxx
6142 mg
3071
0110 0000 0000 0xxx
19193.75 mg
3071
Maximum positive
acceleration value
in range
[mg]
dec
bin
0101 1111 1111 1xxx
-2304 mg
-3072
0101 1111 1111 1xxx
-3072 mg
-3072
0101 1111 1111 1xxx
-6144 mg
-3072
0101 1111 1111 1xxx
-19200 mg
-3072
Minimum negative [mg]
acceleration value
in range
dec
bin
1010 0000 0000 0xxx
1010 0000 0000 0xxx
1010 0000 0000 0xxx
1010 0000 0000 0xxx
First negative
acceleration value
out of range
[mg]
dec
bin
-
-
-
-
-3073
-3073
-3073
-3073
1001 1111 1111 1xxx
1001 1111 1111 1xxx
1001 1111 1111 1xxx
1001 1111 1111 1xxx
2.3 Motion Detection Mode
2.3.1 Description
In MD mode, the ADC's data is not fed to the signal processing channel shown in Figure 1 but to
the MD block. It consists of a digital band-pass filter (BPF), threshold level programmable digital
comparator and a configurable trigger function.
BPF's -3 dB low-pass frequency is 25 Hz …60 Hz and -3 dB high-pass frequency is
0.05 Hz …1 Hz. See Figure 2 below.
Band Pass Filter's Response
for reference only
5
0
-5
Lower limit
Upper limit
-10
-15
-20
0.01
0.1
1
10
100
1000
Freq [Hz]
Figure 2. The MD band-pass filter's frequency response.
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Rev.A.07
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