Document Number: MMA1251 Freescale Semiconductor Rev 1, 01/2012 Data Sheet: Technical Data Low-g Micromachined Accelerometer MMA1251 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 cutoff 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 16-LEAD SOIC Pb-FREE Transducer Hermetically Sealed at Wafer Level for Superior Reliability CASE 475-01 Robust Design, High Shock Survivability Qualified AECQ100, Rev. F Grade 2 (-40C/+105C) Typical Applications Top View Vibration Monitoring and Recording Appliance Control V 16 N/C 1 SS Mechanical Bearing Monitoring V 2 15 N/C SS 14 V 3 N/C Computer Hard Drive Protection SS 13 N/C V 4 OUT Computer Mouse and Joysticks 12 STATUS 5 N/C Virtual Reality Input Devices V 11 6 N/C DD Sports Diagnostic Devices and Systems V 10 N/C SS 7 ST 9 8 N/C ORDERING INFORMATION Device Name Temperature Range Case No. Package Pin Connections MMA1251EG 40 to 105C 475-01 SOIC-16 MMA1251EGR2 40 to 105C 475-01 SOIC-16, Tape & Reel MMA1251KEG* 40 to 105C 475-01 SOIC-16 MMA1251KEGR2* 40 to 105C 475-01 SOIC-16, Tape & Reel *Part number sourced from a different facility. 2012 Freescale Semiconductor, Inc. All rights reserved.V DD Temp Comp g-Cell Integrator Gain Filter V OUT and Gain Sensor ST Control Logic & Clock Self-test Oscillator EPROM Trim Circuits Generator V SS STATUS Figure 1. Simplified Accelerometer Functional Block Diagram Table 1. Maximum Ratings (Maximum ratings are the limits to which the device can be exposed without causing permanent damage.) Rating Symbol Value Unit Powered Acceleration (all axes) G 1500 g pd Unpowered Acceleration (all axes) G 2000 g upd Supply Voltage V 0.3 to +7.0 V DD (1) Drop Test D 1.2 m drop Storage Temperature Range T 40 to +125 C stg 1. Dropped onto concrete surface from any axis. ELECTRO STATIC DISCHARGE (ESD) WARNING: This device is sensitive to electrostatic discharge. Although the Freescale accelerometers contain internal performance or cause failure of the chip. When handling the 2 kV ESD protection circuitry, extra precaution must be taken accelerometer, proper ESD precautions should be followed by the user to protect the chip from ESD. A charge of over to avoid exposing the device to discharges which may be 2000 volts can accumulate on the human body or associated detrimental to its performance. test equipment. A charge of this magnitude can alter the MMA1251 Sensors 2 Freescale Semiconductor, Inc.