Low G Micromachined Accelerometer
Description
Freescale Semiconductor Technical Data
Document Number: MMA1270EG Rev 0, 04/2007
Low G Micromachined Accelerometer
The MMA series of silicon capacitive, micromachined accelerometers feature 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.
Features • • • • • • • Integral Signal Conditioning Linear Output 2nd Order Bessel Filter Calibrated Self-test EPROM Parity Check Status Transducer Hermetically Sealed at Wafer Level for Superior Reliability Robust Design, High Shock Survivability
MMA1270EG
MMA1270EG: Z AXIS SENSITIVITY MICROMACHINED ACCELEROMETER ±2.
5g
Typical Applications • • • • • • •
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Vibration Monitoring and Recording Appliance Control Mechanical Bearing Monitoring Computer Hard Drive Protection Computer Mouse and Joysticks Virtual Reality Input Devices Sports Diagnostic Devices and Systems
EG SUFFIX (Pb-FREE) 16-LEAD SOIC CASE 475-01
ORDERING INFORMATION
Device Name MMA1270EG MMA1270EGR2 Temperature Range –40° to 105°C –40° to 105°C Case No.
475-01 475-01 Package SOIC-16 SOIC-16 Tape & Reel
VDD G-Cell Sensor Integrator Gain Filter Temp Comp and Gain VOUT VSS VSS VSS VOUT STATUS VDD VSS ST 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 N/C N/C N/C N/C N/C N/C N/C N/C
ST Self-test
Control Logic & EPROM Trim Circuits
Oscillator
Clock Generator
VSS
STATUS
Figure 1.
Simplified Accelerometer Functional Block Diagram
Figure 2.
Pin Connections
© Freescale Semiconductor, Inc.
, 2007.
All rights reserved.
Table 1.
Maximum Ratings (Maximum ratings are the limits to which the device can be exposed without causing permanent damage.
)
Rating Powered Acceleration (all axes) Unpowered Acceleration (all axes) Supply Voltage Drop Test (1) Storage Temperature Range 1.
Dropped onto concrete surface from any axis.
Symbol Gpd Gupd VDD Hdrop Tstg Value 1500 2000 –0.
3...
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