MMAS40GWB データシートの表示（PDF） - Motorola => Freescale
部品番号
コンポーネント説明
メーカー
MMAS40GWB Datasheet PDF : 4 Pages
| |||
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
SIMPLIFIED BLOCK DIAGRAM
+
+
2 SELF–TEST
6 VS
+
MMAS40GWB
MICROMACHINED
ACCELEROMETER
± 40g AMPLIFIED
(Wingback)
12 3 4 5 6
WB PACKAGE
CASE 456–03
PIN NUMBER (WB)
1 NC (1)
2 Self–Test
4 Vref (2)
5 GND
3 Output
6 VS (2)
NOTES:
1. Connect to ground.
2. Bypass at pin to ground with 0.1 µF
ceramic capacitor for specified perfor-
mance.
g
G–CELL
A
4 Vref
LOW–PASS FILTER
TEMPERATURE
COMPENSATION
3 OUTPUT
5 GND
(Replaces XMMAS40GWB)
©MMoottoororolal,aInSc.e1n9s97or Device Data
1
Share Link: 