Document Number: MMA1220D

Rev 3, 03/2006

Freescale Semiconductor

Technical Data

© Freescale Semiconductor, Inc., 2006. All rights reserved.

Low G

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.

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

•

Mechanical Bearing Monitoring

•

Computer Hard Drive Protection

•

Computer Mouse and Joysticks

•

Virtual Reality Input Devices

•

Sport Diagnostic Devices and Systems

ORDERING INFORMATION

Device Name

Temperature Range

Case No.

Package

MMA1220D

–40

° to 125°C

475-01

SOIC-16

MMA1220DR2

–40

° to 125°C

475-01

SOIC16, Tape & Reel

MMA1220EG

–40

° to 125°C

475-01

SOIC-16

MMA1220EGR2

–40

° to 125°C

475-01

SOIC16, Tape & Reel

MMA1220

MMA1220D: Z AXIS SENSITIVITY

MICROMACHINED

ACCELEROMETER

±8g

D SUFFIX

EG SUFFIX (Pb-FREE)

16-LEAD SOIC

CASE 475-01

Figure 1. Simplified Accelerometer Functional Block Diagram

N/C

N/C

N/C

ST

STATUS

N/C

N/C

N/C

N/C

N/C

N/C

N/C

N/C

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

Figure 2. Pin Connections

G-Cell

Sensor

Integrator

Gain

Filter

Temp Comp

and Gain

Self-test

Control Logic &

EPROM Trim Circuits

Clock

Generator

Oscillator

ST

STATUS