參數(shù)資料
型號: MMA3201
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: Surface Mount Micromachined Accelerometer
中文描述: 表面貼裝微加速度計
文件頁數(shù): 5/10頁
文件大?。?/td> 272K
代理商: MMA3201
Sensors
Freescale Semiconductor
5
MMA3201D
BASIC CONNECTIONS
Pinout Description
Figure 5. SOIC Accelerometer with Recommended
Connection Diagram
PCB Layout
Figure 6. Recommended PCB Layout for Interfacing
Accelerometer to Microcontroller
NOTES:
1. Use a 0.1
μ
F capacitor on V
DD
to decouple the power
source.
2. Physical coupling distance of the accelerometer to the
microcontroller should be minimal.
3. Place a ground plane beneath the accelerometer to
reduce noise, the ground plane should be attached to
all of the open ended terminals shown in
Figure 6
.
4. Use an RC filter of 1 k
and 0.01
μ
F on the output of
the accelerometer to minimize clock noise (from the
switched capacitor filter circuit).
5. PCB layout of power and ground should not couple
power supply noise.
6. Accelerometer and microcontroller should not be a
high current path.
7. A/D sampling rate and any external power supply
switching frequency should be selected such that they
do not interfere with the internal accelerometer
sampling frequency. This will prevent aliasing errors.
Pin No.
Pin Name
Description
1 thru 3
Leave unconnected.
4
No internal connection. Leave
unconnected.
5
ST
Logic input pin used to initiate self-test.
6
X
OUT
Output voltage of the accelerometer. X
Direction.
7
STATUS
Logic output pin to indicate fault.
8
V
SS
The power supply ground.
9
V
DD
The power supply input.
10
AV
DD
Power supply input (Analog).
11
Y
OUT
Output voltage of the accelerometer. Y
Direction.
12 thru 16
Used for factory trim. Leave
unconnected.
17 thru 19
No internal connection. Leave
unconnected.
20
GND
Ground.
N/C
N/C
N/C
N/C
ST
X
OUT
STATUS
V
SS
V
DD
AV
DD
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
GND
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
Y
OUT
V
DD
Logic
Input
C1
0.1
μ
F
5
9
10
8
ST
V
DD
AV
DD
V
SS
Y
OUT
MMA3201D
7
6
11
STATUS
X Output
Signal
R1
1 k
C2
0.01
μ
F
R2
1 k
C3
0.01
μ
F
Y Output
Signal
X
OUT
STATUS
ST
X
OUT
Y
OUT
V
SS
V
DD
A
P1
P0
A/D In
A/D In
V
RH
V
SS
V
DD
M
C
0.1
μ
F
C 0.1
μ
F
Power Supply
C 0.1
μ
F
0.1
μ
F
0.1
μ
F
R
1 k
R
C
C
1 k
相關PDF資料
PDF描述
MMA3202D Surface Mount Micromachined Accelerometer
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相關代理商/技術參數(shù)
參數(shù)描述
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MMA3201DR2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Surface Mount Micromachined Accelerometer
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