MMA3201D Freescale Semiconductor, MMA3201D Datasheet - Page 5

• Manufacturer Part Number: MMA3201D
• Description: SENS ACCEL XY AXIS +-38G 20-SOIC
• Manufacturer: Freescale Semiconductor
• Series: MMAr

Specifications of MMA3201D

• Axis: X or Y
• Acceleration Range: ±225g
• Sensitivity: 10mV/g
• Voltage - Supply: 4.75 V ~ 5.25 V
• Output Type: Analog
• Bandwidth: 400Hz
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Package Type: SOIC W
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Operating Temperature Classification: Automotive
• Product Height (mm): 3.3mm
• Mounting: Surface Mount
• Pin Count: 20
• Sensing Axis: X, Y
• Acceleration: 40 g
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -
• Lead Free Status / Rohs Status: Not Compliant
• Other names: MMA3201DTR; MMA3201DTR

BASIC CONNECTIONS
Pinout Description
Pin Descriptions
Figure 3. SOIC Accelerometer with Recommended
Motorola Sensor Device Data
V
14 thru 16
DD
9 thru 13
Pin No.
1 thru 3
0.1 µF
C1
4
5
6
7
8
Logic
Input
STATUS
Connection Diagram
V
V
V
N/C
N/C
N/C
OUT
ST
Pin Name
DD
SS
Trim pins
STATUS
4
8
7
V
V
N/C
V
ST
OUT
—
ST
V
V
SS
DD
DD
SS
MMA2301D
1
2
3
4
5
6
7
8
Leave unconnected.
Logic input pin used to initiate self-test.
Output voltage of the accelerometer.
Logic output pin to indicate fault.
The power supply ground.
The power supply input.
Used for factory trim. Leave
unconnected.
No internal connection. Leave
unconnected.
V
OUT
Freescale Semiconductor, Inc.
6
5
0.01 µF
16
15
13
12
10
14
11
For More Information On This Product,
9
C2
Description
1 kΩ
R1
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
Go to: www.freescale.com
Status
Output
Signal
Figure 4. Recommend PCB Layout for Interfacing
NOTES:
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PCB Layout
Use a 0.1 µF capacitor on V
source.
Physical coupling distance of the accelerometer to the
microcontroller should be minimal.
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 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).
PCB layout of power and ground should not couple power
supply noise.
Accelerometer and microcontroller should not be a high
current path.
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.
STATUS
V
V
V
OUT
ST
DD
SS
Accelerometer to Microcontroller
C
Power Supply
0.1 µF
1 kΩ
R
C
C
0.01 µF
0.1 µF
DD
to decouple the power
P1
P0
A/D In
V
RH
V
V
DD
SS
MMA2301D
C
0.1 µF
5