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参数资料
| 型号： | MMA7331LR1 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 5/11页 |
| 文件大小： | 0K |
| 描述： | ACCELEROMETER 4G XYZ ENH 14-LGA |
| 产品变化通告： | MMA73x Family Discontinuation 04/May/2010 |
| 标准包装： | 1,000 |
| 轴： | X，Y，Z |
| 加速范围： | ±4g，9g |
| 灵敏度： | 308mV/g，83.6mV/g |
| 电源电压： | 2.2 V ~ 3.6 V |
| 输出类型： | 模拟 |
| 带宽： | 400Hz - XY，300Hz - Z |
| 接口： | 并联 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-VFLGA |
| 供应商设备封装： | 14-LGA（3x5） |
BASIC CONNECTIONS
Pin Descriptions
Top View
PCB Layout
N/C
POWER SUPPLY
N/C
X OUT
Y OUT
Z OUT
Self Test
N/C
N/C
g-Select
V DD
V SS
Sleep
g-Select
C
C
V RH
P0
P1
V DD
V SS
C
V SS
N/C
Self Test
P2
V DD
N/C
X OUT
C
A/D IN
Sleep
Figure 4. Pinout Description
Y OUT
Z OUT
C
C
A/D IN
A/D IN
Table 4. Pin Descriptions
Pin No. Pin Name
Description
Figure 6. Recommended PCB Layout for Interfacing
1
N/C
No internal connection
Accelerometer to Microcontroller
Leave unconnected
2
3
4
5
6
7
8
9
10
11
12
13
14
X OUT
Y OUT
Z OUT
V SS
V DD
Sleep
N/C
N/C
g-Select
N/C
N/C
Self Test
N/C
X direction output voltage
Y direction output voltage
Z direction output voltage
Power Supply Ground
Power Supply Input
Logic input pin to enable product or Sleep Mode
No internal connection
Leave unconnected
No internal connection
Leave unconnected
Logic input pin to select g level
Unused for factory trim
Leave unconnected
Unused for factory trim
Leave unconnected
Input pin to initiate Self Test
Unused for factory trim
Leave unconnected
NOTES:
1. Use 0.1 μF 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 a 3.3nF capacitor on the outputs 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 (11 kHz for the sampling
VDD
Logic
Input
Logic
Input
10
13
g-Select
Self Test
XOUT
2
3.3 nF
frequency). This will prevent aliasing errors.
8. 10M Ω or higher is recommended on X OUT , Y OUT and
Z OUT to prevent loss due to the voltage divider
relationship between the internal 32 k Ω resistor and
the measurement input impedance.
VDD
0.1 μF
6
MMA7331L
YOUT
3
3.3 nF
5
VSS
ZOUT
4
Logic
Input
7
Sleep
3.3 nF
Figure 5. Accelerometer with Recommended
Connection Diagram
MMA7331L
Sensors
Freescale Semiconductor
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MMA7331LR2 | 功能描述:加速计 - 板上安装 4G XYZ LGA 14 LEAD RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
| MMA7331LT | 功能描述:加速计 - 板上安装 4G XYZ LGA 14 LEAD RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
| MMA7331LT | 制造商:Freescale Semiconductor 功能描述:ACCELERATION SENSOR IC |
| MMA7340L | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:【3g, 【11g Three Axis Low-g Micromachined Accelerometer |
| MMA7340L_0708 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:【3g, 【11g Three Axis Low-g Micromachined Accelerometer |
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