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MMA1260 데이터시트(PDF) 5 Page - Freescale Semiconductor, Inc

부품명 MMA1260
상세설명  Low G Micromachined Accelerometer
PDF  9 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MMA1260 데이터시트(HTML) 5 Page - Freescale Semiconductor, Inc

  MMA1260 Datasheet HTML 1Page - Freescale Semiconductor, Inc MMA1260 Datasheet HTML 2Page - Freescale Semiconductor, Inc MMA1260 Datasheet HTML 3Page - Freescale Semiconductor, Inc MMA1260 Datasheet HTML 4Page - Freescale Semiconductor, Inc MMA1260 Datasheet HTML 5Page - Freescale Semiconductor, Inc MMA1260 Datasheet HTML 6Page - Freescale Semiconductor, Inc MMA1260 Datasheet HTML 7Page - Freescale Semiconductor, Inc MMA1260 Datasheet HTML 8Page - Freescale Semiconductor, Inc MMA1260 Datasheet HTML 9Page - Freescale Semiconductor, Inc  
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MMA1260D
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 µF capacitor on VDD 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 kΩ and 0.01 µF 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
VSS
Redundant connections to the internal
VSS and may be left unconnected.
4
VOUT
Output voltage of the accelerometer.
5
STATUS
Logic output pin to indicate fault.
6
VDD
The power supply input.
7
VSS
The power supply ground.
8
ST
Logic input pin used to initiate self-test.
9 thru 13
Trim pins
Used for factory trim. Leave
unconnected.
14 thru 16
—
No internal connection. Leave
unconnected.
VSS
VSS
VSS
VOUT
STATUS
VDD
VSS
ST
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
8
MMA1260D
ST
VDD
VSS
VOUT
Output
Signal
R1
1 kΩ
4
C2
0.1 µF
6
7
Logic
Input
VDD
C1
0.1 µF
STATUS
5
3
2
1
VSS
VSS
VSS
P0
A/D In
VRH
VSS
VDD
ST
VOUT
VSS
VDD
0.01 µF
1 kΩ
0.1 µF
0.1 µF
Power Supply
0.1 µF
P1
STATUS
C
C
C
R
C



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