Freescale Semiconductor, Inc.
SEMICONDUCTOR TECHNICAL DATA
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.
MMA1220D: Z AXIS SENSITIVITY
MICROMACHINED
ACCELEROMETER
±8g
Features
•
•
•
•
•
•
•
•
Integral Signal Conditioning
Linear Output
Ratiometric Performance
4th Order Bessel Filter Preserves Pulse Shape Integrity
Calibrated Self–test
16
9
Low Voltage Detect, Clock Monitor, and EPROM Parity Check Status
Transducer Hermetically Sealed at Wafer Level for Superior Reliability
Robust Design, High Shock Survivability
1
8
16 LEAD SOIC
CASE 475
Typical Applications
•
•
•
•
•
•
•
Vibration Monitoring and Recording
Appliance Control
Pin Assignment
Mechanical Bearing Monitoring
Computer Hard Drive Protection
Computer Mouse and Joysticks
Virtual Reality Input Devices
Sports Diagnostic Devices and Systems
16
15
14
13
12
11
10
9
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
ST
1
2
3
4
5
6
7
8
V
OUT
STATUS
ORDERING INFORMATION
V
SS
V
DD
Device
Temperature Range
–40 to +85°C
Case No.
Package
MMA1220D
Case 475–01
SOIC–16
SIMPLIFIED ACCELEROMETER FUNCTIONAL BLOCK DIAGRAM
V
DD
G–CELL
SENSOR
TEMP
COMP
INTEGRATOR
GAIN
FILTER
V
OUT
ST
CONTROL LOGIC &
EPROM TRIM CIRCUITS
SELF–TEST
OSCILLATOR
CLOCK GEN.
V
SS
STATUS
Figure 1. Simplified Accelerometer Functional Block Diagram
REV 0
2–18
www.motorola.com/semiconductors
Motorola Sensor Device Data
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA [ MOTOROLA ]
