OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MMA2612KGCWR2

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P46
Sensors
22 NXP Semiconductors
MMA26xx
3.5.3.1 Decimation Sinc Filter
The serial data stream produced by the ΣΔ converters is decimated and converted to parallel values by a 3rd order 16:1 sinc
filter with a decimation factor of 16.
Figure 15. Sinc Filter Response, t
S
= 16 μs
Hz()
1z
16–
–
16 1 z
1–
–()×
-----------------------------------
3
=
Sensors
NXP Semiconductors 23
MMA26xx
3.5.3.2 Low Pass Filter
Data from the Sinc filter is processed by an infinite impulse response (IIR) low pass filter.
The device provides the option for one of three low-pass filters. The filter is selected with the LPF[1:0] bits in the TYPE register.
The filter selection options are listed in Section 3.1.2.1, Table 9. Response parameters for the low-pass filter are specified in Sec-
tion 2.8. Filter characteristics are illustrated in the figures below.
Note: Low Pass Filter Figures do not include g-cell frequency response.
Table 9. Low Pass Filter Coefficients
Description Filter Coefficients Group Delay
180 Hz LPF
a
0
0.000534069200512
4608/f
osc
n
11
0.25 d
11
1
n
12
0.499999985098839 d
12
-1.959839582443237
n
13
0.25 d
13
0.960373640060425
n
21
1d
21
1
n
22
0d
22
0
n
23
0d
23
0
400 Hz LPF
a
0
0.003135988372378
3392/f
osc
n
11
0.000999420881271 d
11
1.0
n
12
0.001998946070671 d
12
-1.892452478408814
n
13
0.000999405980110 d
13
0.89558845758438
n
21
0.250004753470421 d
21
1.0
n
22
0.499986037611961 d
22
-1.919075012207031
n
23
0.250009194016457 d
23
0.923072755336761
800 Hz LPF
a
0
0.011904109735042
1728/f
osc
n
11
0.003841564059258 d
11
1.0
n
12
0.007683292031288 d
12
-1.790004611015320
n
13
0.003841534256935 d
13
0.801908731460571
n
21
0.250001862645149 d
21
1.0
n
22
0.499994158744812 d
22
-1.836849451065064
n
23
0.250003993511200 d
23
0.852215826511383
Hz() a
0
n
11
z
0
⋅()n
12
z
1–
⋅()n
13
z
2–
⋅()++
d
11
z
0
⋅()d
12
z
1–
⋅()d
13
z
2–
⋅()++
--------------------------------------------------------------------------------------------
n
21
z
0
⋅()n
22
z
1–
⋅()n
23
z
2–
⋅()++
d
11
z
0
⋅()d
22
z
1–
⋅()d
23
z
2–
⋅()++
--------------------------------------------------------------------------------------------
⋅⋅=
Sensors
24 NXP Semiconductors
MMA26xx
Figure 16. Low-Pass Filter Characteristics: f
C
= 180 Hz, 2-Pole, t
S
= 16 μs
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P46

MMA2612KGCWR2

Mfr. #:
Buy MMA2612KGCWR2
Manufacturer:
NXP / Freescale
Description:
Accelerometers DSI2.5 Accelerometer, QFN 16
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet