MMA1260D Freescale Semiconductor, MMA1260D Datasheet - Page 5

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MMA1260D

Manufacturer Part Number
MMA1260D
Description
SENSOR ACCEL Z-AX +/-1.5G 16SOIC
Manufacturer
Freescale Semiconductor
Series
MMAr
Datasheet

Specifications of MMA1260D

Axis
Z
Acceleration Range
±1.5g
Sensitivity
1200 mV/g
Voltage - Supply
4.75 V ~ 5.25 V
Output Type
Analog
Bandwidth
50Hz
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.300", 7.50mm Width)
For Use With
RD1986MMA2260D - KIT SENSOR ACCEL MMA2260D TRIAX
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Interface
-
Other names
Q1376594
Sensor Device Data
Freescale Semiconductor
14 thru 16
9 thru 13
V
Pin No.
1 thru 3
0.1 µF
Figure 5. SOIC Accelerometer with Recommended
DD
C1
4
5
6
7
8
LOGIC
INPUT
STATUS
V
Pin Name
Trim pins
STATUS
V
V
V
V
V
OUT
ST
SS
DD
SS
SS
SS
V
Figure 4. Pinout Description
V
V
V
ST
OUT
DD
SS
SS
BASIC CONNECTIONS
8
6
7
Connection Diagram
ST
V
V
DD
SS
1
2
3
4
5
6
7
8
MMA1260D
Redundant connections to the internal
Output voltage of the accelerometer.
Logic output pin used to indicate fault.
The power supply input.
The power supply ground.
Logic input pin used to initiate self--
Used for factory trim.
No internal connection.
V
test.
Leave unconnected.
Leave unconnected.
SS
and may be left unconnected.
V
OUT
Description
16
15
14
13
12
10
11
9
5
4
0.1 µF
C2
1 kΩ
R1
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
STATUS
OUTPUT
SIGNAL
NOTES:
• Use a 0.1 µF capacitor on V
• Physical coupling distance of the accelerometer to the mi-
• Place a ground plane beneath the accelerometer to reduce
• Use an RC filter of 1 kΩ and 0.1 µF on the output of the ac-
• PCB layout of power and ground should not couple power
• Accelerometer and microcontroller should not be a high
• A/D sampling rate and any external power supply switching
PCB Layout
Figure 6. Recommended PCB Layout for Interfacing
source.
crocontroller should be minimal.
noise, the ground plane should be attached to all internal
V
celerometer to minimize clock noise (from the switched
capacitor filter circuit).
supply noise.
current path.
frequency should be selected such that they do not inter-
fere with the internal accelerometer sampling frequency.
This will prevent aliasing errors.
SS
STATUS
V
terminals shown in Figure 4.
V
OUT
V
ST
DD
SS
Accelerometer to Microcontroller
POWER SUPPLY
C 0.1 µF
1 kΩ
R
C
C
0.1 µF
0.1 µF
DD
P1
P0
A/D IN
V
RH
to decouple the power
V
V
DD
SS
MMA1260D
C
0.1 µF
5