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參數(shù)資料
| 型號(hào)： | MMA6281QR2 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國(guó))有限公司 |
| 英文描述： | 【2.5g - 10g Two Axis Low-g Micromachined Accelerometer |
| 中文描述： | 【2.5克- 10g的兩個(gè)三軸低g加速度計(jì) |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大?。?/td> | 325K |
| 代理商： | MMA6281QR2 |
Sensors
Freescale Semiconductor
5
MMA6281QT
BASIC CONNECTIONS
Pin Descriptions
Figure 4. Pinout Description
Figure 5. Accelerometer with Recommended
Connection Diagram
PCB Layout
Figure 6. Recommended PCB Layout for Interfacing
Accelerometer to Microcontroller
NOTES:
1. Use 0.1 μF capacitor on V
DD
to decouple the power
source. Do not exceed capacitor values of 2.2 or
3.3 μF. Slow dV/dt rise times on V
DD
may cause the
device to not power up below 0
°
C.To ensure
operation below 0
°
C ensure V
DD
line has the ability
to reach 2.2V in < 0.1 ms as measured on the device
at the V
DD
pin. If output signal does not assert itself,
then the dv/dt at the V
DD
pin of the device should be
measured.
2. Physical coupling distance of the accelerometer to
the microcontroller should be minimal.
3. The flag underneath the package is internally
connected to ground. It is not recommended for the
flag to be soldered down.
4. 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
.
5. Use an RC filter with 1.0 k
and 0.1 μF on the
outputs of the accelerometer to minimize clock noise
(from the switched capacitor filter circuit).
6. PCB layout of power and ground should not couple
power supply noise.
7. Accelerometer and microcontroller should not be a
high current path.
8. 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
frequency). This will prevent aliasing errors.
9. PCB layout should not run traces or vias under the
QFN part. This could lead to ground shorting to the
accelerometer flag.
Table 4. Pin Descriptions
Pin No.
Pin Name
Description
1
g-Select1
Logic input pin to select g level.
2
g-Select2
Logic input pin to select g level.
3
V
DD
V
SS
N/C
Power Supply Input
4
Power Supply Ground
5 - 7
No internal connection.
Leave unconnected.
8 - 11
N/C
Unused for factory trim.
Leave unconnected.
12
Sleep Mode
Logic input pin to enable product or
Sleep Mode.
13
Z
OUT
N/C
Z direction output voltage.
14
No internal connection.
Leave unconnected.
15
X
OUT
N/C
X direction output voltage.
16
No internal connection.
Leave unconnected.
Top View
X
O
15
16
14
13
12
11
10
1
2
3
4
5
6
7
8
9
g-Select1
N/C
N/C
N/C
g-Select2
V
DD
V
SS
N
N
N
N
N
N
Z
O
Sleep Mode
Sleep Mode
V
DD
V
SS
3
4
V
DD
0.1
μ
F
0.1
μ
F
15
12
X
OUT
1 k
Logic
Input
2
1
0.1
μ
F
13
Z
OUT
1 k
Logic
Inputs
g-Select2
g-Select1
MMA6281QT
POWER SUPPLY
V
DD
V
SS
Sleep Mode
g-Select1
g-Select2
X
OUT
Z
OUT
A
V
DD
V
SS
V
RH
P0
P1
P2
A/D
IN
A/D
IN
C
C
C
C
R
R
C
C
M
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MMA6281QT | 功能描述:加速計(jì) - 板上安裝 2.5 - 10G XZ QFN 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 |
| MMA6281QT_07 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:【2.5g - 10g Two Axis Low-g Micromachined Accelerometer |
| MMA6331L | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:?±4g, ?±9g Two Axis Low-g Micromachined Accelerometer |
| MMA6331LR1 | 功能描述:加速計(jì) - 板上安裝 4G XY LGA 14 LD ENH 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 |
| MMA6331LR2 | 功能描述:加速計(jì) - 板上安裝 4G XY LGA 14 LD ENH 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 |
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