Document Number: MMA1220D
Rev 3, 03/2006
Freescale Semiconductor
Technical Data
Low G
MMA1220
Micromachined Accelerometer
The MMA series of silicon capacitive, micromachined accelerometers feature
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
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
Appliance Control
D SUFFIX
EG SUFFIX (Pb-FREE)
16-LEAD SOIC
Mechanical Bearing Monitoring
Computer Hard Drive Protection
Computer Mouse and Joysticks
Virtual Reality Input Devices
Sport Diagnostic Devices and Systems
CASE 475-01
ORDERING INFORMATION
Device Name
MMA1220D
Temperature Range
–40° to 125°C
Case No.
475-01
475-01
475-01
475-01
Package
SOIC-16
MMA1220DR2
MMA1220EG
MMA1220EGR2
–40° to 125°C
SOIC16, Tape & Reel
SOIC-16
–40° to 125°C
–40° to 125°C
SOIC16, Tape & Reel
VDD
16
15
14
13
12
11
10
9
N/C
N/C
N/C
ST
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
1
2
3
4
5
6
7
8
Temp Comp
and Gain
G-Cell
Sensor
VOUT
Integrator
Gain
Filter
VOUT
ST
Control Logic &
EPROM Trim Circuits
Clock
Generator
STATUS
VSS
Oscillator
Self-test
VSS
VDD
STATUS
Figure 2. Pin Connections
Figure 1. Simplified Accelerometer Functional Block Diagram
© Freescale Semiconductor, Inc., 2006. All rights reserved.