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Motorola Sensor Device Data
For More Information On This Product,
Go to: www.freescale.com
The MMA series of silicon capacitive, micromachined accelerometers
features signal conditioning, a 4–pole low pass filter and temperature
compensation. Zero–g offset full scale span and filter cut–off are factory set and
require no external devices. A full system self–test capability verifies system
functionality.
Features
Integral Signal Conditioning
Linear Output
Ratiometric Performance
4th Order Bessel Filter Preserves Pulse Shape Integrity
Calibrated Self–test
Low Voltage Detect, Clock Monitor, and EPROM Parity Check Status
Transducer Hermetically Sealed at Wafer Level for Superior Reliability
Robust Design, High Shocks Survivability
Typical Applications
Vibration Monitoring and Recording
Impact Monitoring
Appliance Control
Mechanical Bearing Monitoring
Computer Hard Drive Protection
Computer Mouse and Joysticks
Virtual Reality Input Devices
SIMPLIFIED ACCELEROMETER FUNCTIONAL BLOCK DIAGRAM
G–CELL
SENSOR
INTEGRATOR
GAIN
FILTER
TEMP
COMP
SELF–TEST
CONTROL LOGIC &
EPROMTRIMCIRCUITS
CLOCK GEN.
OSCILLATOR
VDD
XOUT
VSS
ST
Figure 1. Simplified Accelerometer Functional Block Diagram
STATUS
YOUT
AVDD
REV 0
SEMICONDUCTOR TECHNICAL DATA
MMA3201D: X–Y AXIS SENSITIVITY
MICROMACHINED
ACCELEROMETER
±
40g
20 LEAD SOIC
CASE 475A
20
11
1
10
14
13
12
11
15
16
17
18
19
20
8
9
7
6
5
4
3
2
1
N/C
N/C
N/C
N/C
ST
XOUT
STATUS
VSS
VDD
AVDD
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
YOUT
Pin Assignment
10
F
Freescale Semiconductor, Inc.
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