Freescale Semiconductor, Inc.
SEMICONDUCTOR TECHNICAL DATA
The MMA series of silicon capacitive, micromachined accelerometers
features signal conditioning, a 2–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.
MMA1250D: Z AXIS SENSITIVITY
MICROMACHINED
ACCELEROMETER
±5g
Features
•
•
•
•
•
•
•
Integral Signal Conditioning
Linear Output
2nd Order Bessel Filter
Calibrated Self–test
EPROM Parity Check Status
16
Transducer Hermetically Sealed at Wafer Level for Superior Reliability
Robust Design, High Shock Survivability
9
1
Typical Applications
8
•
•
•
•
•
•
•
Vibration Monitoring and Recording
Appliance Control
16 LEAD SOIC
CASE 475
Mechanical Bearing Monitoring
Computer Hard Drive Protection
Computer Mouse and Joysticks
Virtual Reality Input Devices
Sports Diagnostic Devices and Systems
Pin Assignment
16
15
14
13
12
11
10
9
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
V
1
2
3
4
5
6
7
8
SS
V
SS
V
SS
V
OUT
STATUS
V
DD
V
SS
ORDERING INFORMATION
Device
Temperature Range
–40 to +105°C
Case No.
Package
ST
MMA1250D
Case 475–01
SOIC–16
SIMPLIFIED ACCELEROMETER FUNCTIONAL BLOCK DIAGRAM
V
DD
G–CELL
SENSOR
TEMP COMP
& GAIN
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 1
2–24
www.motorola.com/semiconductors
Motorola Sensor Device Data
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA [ MOTOROLA ]
