MMAS40GWB

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MMAS40GWB/D Micromachined Accelerometer ± 40g Amplified The MMAS40G family of silicon capacitive, micro–machined accelerometers features integral signal amplification, signal conditioning, a 4–pole low–pass filter and temperature compensation. Zero–G offset, full scale span and filter roll–off are factory set and require no external passives. A calibrated self–test feature mechanically displaces the seismic mass with the application of a digital self–test signal. The MMAS40G incorporates a single polysilicon seismic mass, suspended between two fixed polysilicon plates (G–cell). The forces of acceleration move the seismic mass, thereby resulting in a change in capacitance. The G–cell is sealed at the wafer level, creating a particle–free environment. The G–cell features built–in damping and over–range stops to protect it from mechanical shock. MMAS40G accelerometers are ideally suited for automotive crash detection and recording, vibration monitoring, automotive suspension control, appliance control systems, etc. Features Minimum Full Scale Measurement ± 40g Calibrated, True Self–Test Senses Parallel to the Printed Circuit Board Integral Signal Conditioning and 4–Pole Filter Linear Output Robust, High Shock Survivability 1 2 3 MMAS40GWB MICROMACHINED ACCELEROMETER ± 40g AMPLIFIED (Wingback) 12 3 4 5 6 WB PACKAGE CASE 456–03 PIN NUMBER (WB) NC (1) Self–Test Output 4 5 6 Vref (2) GND VS (2) SIMP...