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參數(shù)資料
| 型號： | MMA2244EG |
| 廠商： | 飛思卡爾半導體(中國)有限公司 |
| 英文描述： | Low G Micromachined Accelerometer |
| 中文描述： | 低摹微加速度計 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 240K |
| 代理商： | MMA2244EG |
MMA2244EG
Sensors
Freescale Semiconductor
5
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.
Table 3. Pin Descriptions
Pin No.
Pin Name
Description
1 thru 3
—
Leave unconnected, or connect to
ground.
4
ST
Logic input pin used to initiate self-test.
5
V
OUT
Output voltage of the accelerometer.
6
STATUS
Logic output pin to indicate fault.
7
V
SS
The power supply ground.
8
V
DD
The power supply input.
9 thru 13
Trim pins
Used for factory trim. Leave
unconnected.
14 thru 16
—
No internal connection. Leave
unconnected.
N/C
N/C
N/C
ST
V
OUT
STATUS
V
SS
V
DD
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
MMA2244EG
ST
V
OUT
Output
Signal
R1
1 k
5
C2
0.01
μ
F
4
7
Logic
Input
V
DD
C1
0.1
μ
F
6
STATUS
8
V
DD
V
SS
P0
A/D In
V
RH
V
SS
V
DD
ST
V
OUT
V
SS
V
DD
0.01
μ
F
1 k
0.1
μ
F
0.1
μ
F
Power Supply
0.1
μ
F
P1
STATUS
M
A
R
C
C
C
C
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|---|---|
| MMA2244EGR2 | 制造商:Freescale Semiconductor 功能描述: |
| MMA2244KEG | 功能描述:加速計 - 板上安裝 20G X-AXIS RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C |
| MMA2244KEG_12 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Low-g Micromachined Accelerometer |
| MMA2244KEGR2 | 功能描述:加速計 - 板上安裝 20G X-AXIS RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C |
| MMA2260 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:【1.5g X-Axis Micromachined Accelerometer |
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