MMA1210D Freescale Semiconductor, MMA1210D Datasheet - Page 5

• Manufacturer Part Number: MMA1210D
• Description: SENSOR ACCEL Z-AX +/-100G 16SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MMA1210D

• Axis: Z
• Acceleration Range: ±112.5g
• Sensitivity: 20mV/g
• Voltage - Supply: 4.75 V ~ 5.25 V
• Output Type: Analog
• Bandwidth: 400Hz
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.50mm Width)
• Sensing Axis: Z
• Acceleration: 100 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: Lead free / RoHS Compliant

BASIC CONNECTIONS
Pinout Description
Figure 4. SOIC Accelerometer with Recommended
Motorola Sensor Device Data
14 thru 16
V
9 thru 13
1 thru 3
Pin No.
DD
0.1 µF
C1
4
5
6
7
8
Logic
Input
Connection Diagram
STATUS
V
V
N/C
N/C
N/C
V
OUT
ST
DD
SS
4
8 V
7
Pin Name
Trim pins
STATUS
V
ST
V
V
V
SS
ST
DD
—
OUT
—
1
2
3
4
5
6
7
8
MMA1210D
DD
SS
V
OUT
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.
Freescale Semiconductor, Inc.
16
15
14
13
12
11
10
9
For More Information On This Product,
6
5
0.01 µF
1 kΩ
C2
R1
Description
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 5. Recommended PCB Layout for Interfacing
NOTES:
•
•
•
•
•
•
•
Status
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 5.
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.
V
OUT
V
V
ST
DD
SS
Accelerometer to Microcontroller
C
Power Supply
0.1 µF
1 kΩ
R R
C
C
0.01 µF
0.1 µF
P1
P0
A/D In
V
DD
RH
to decouple the power
V
V
DD
SS
C
MMA1210D
0.1 µF
5