MMA2301EGR2 Freescale Semiconductor, MMA2301EGR2 Datasheet - Page 5
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MMA2301EGR2
Manufacturer Part Number
MMA2301EGR2
Description
IC SENSOR ACCEL +/-200G 16-SOIC
Manufacturer
Freescale Semiconductor
Series
MMAr
Specifications of MMA2301EGR2
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
16-SOIC (0.300", 7.50mm Width)
Sensing Axis
X
Acceleration
200 g
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
No. Of Axes
1
Sensor Case Style
SOIC
No. Of Pins
16
Supply Voltage Range
4.75V To 5.25V
Operating Temperature Range
-40°C To +125°C
Acceleration Range ±
200gf
Rohs Compliant
Yes
Package Type
SOIC
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
16
Lead Free Status / RoHS Status
Lead free by exemption / RoHS Compliant
Interface
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Sensors
Freescale Semiconductor
PINOUT DESCRIPTION
Table 3. Pin Descriptions
V
14 thru 16
DD
9 thru 13
Pin No.
1 thru 3
Figure 4. SOIC Accelerometer with Recommended
0.1 μF
C1
4
5
6
7
8
Logic
Input
STATUS
V
V
N/C
N/C
N/C
OUT
V
ST
DD
SS
Pin Name
Trim pins
STATUS
4
8
7
V
V
N/C
V
ST
OUT
—
DD
SS
Connection Diagram
ST
V
V
DD
SS
MMA2301KEG
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
16
15
13
12
10
14
11
6
5
9
0.01 μF
Description
C2
1 kΩ
R1
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
Status
BASIC CONNECTIONS
Signal
Output
NOTES:
•
•
•
•
•
•
switching frequency should be selected such that they do not
interfere with the internal accelerometer sampling frequency.
This will prevent aliasing errors.
PCB Layout
A/D sampling rate and any external power supply
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
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.
Figure 5. Recommend PCB Layout for Interfacing
V
V
OUT
V
ST
DD
SS
C
Accelerometer to Microcontroller
Power Supply
0.1 μF
1 kΩ
R
C
C
0.01 μF
0.1 μF
DD
P1
P0
A/D In
V
RH
to decouple the power
Figure 5
MMA2301KEG
V
V
DD
SS
C
0.1 μF
5