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參數資料
| 型號： | AD22285-R2 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | Dual-Axis, High-g, MEMS Accelerometers |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, CQCC8 |
| 封裝： | 5 X 5 MM, 2 MM, ROHS COMPLIANT, CERAMIC, LCC-8 |
| 文件頁數： | 7/12頁 |
| 文件大?。?/td> | 196K |
| 代理商： | AD22285-R2 |
ADXL278
THEORY OF OPERATION
The ADXL278 provides a fully differential sensor structure and
circuit path, resulting in the industry’s highest resistance to
EMI/RFI effects. This latest generation uses electrical feedback
with zero-force feedback for improved accuracy and stability.
The sensor resonant frequency is significantly higher than the
signal bandwidth set by the on-chip filter, avoiding the signal
analysis problems caused by resonant peaks near the signal
bandwidth.
Rev. A | Page 7 of 12
Figure 5 is a simplified view of one of the differential sensor
elements. Each sensor includes several differential capacitor
unit cells. Each cell is composed of fixed plates attached
to the substrate and movable plates attached to the frame.
Displacement of the frame changes the differential capacitance,
which is measured by the on-chip circuitry.
Complementary 200 kHz square waves drive the fixed plates.
Electrical feedback adjusts the amplitudes of the square waves
such that the ac signal on the moving plates is 0. The feedback
signal is linearly proportional to the applied acceleration. This
unique feedback technique ensures that there is no net
electrostatic force applied to the sensor. The differential
feedback control signal is also applied to the input of the filter,
where it is filtered and converted to a single-ended signal.
0
UNIT
SENSING
CELL
MOVABLE
FRAME
FIXED
PLATES
UNIT
FORCING
CELL
ANCHOR
MOVING
PLATE
PLATE
CAPACITORS
A
ANCHOR
Figure 5. Simplified View of Sensor Under Acceleration
相關PDF資料 |
PDF描述 |
|---|---|
| AD22286 | Dual-Axis, High-g, MEMS Accelerometers |
| AD22286-R2 | Dual-Axis, High-g, MEMS Accelerometers |
| ADXL278 | Dual-Axis, High-g, MEMS Accelerometers |
| AD240 | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD22285-R2 | 制造商:Analog Devices 功能描述:Acceleration Sensor IC |
| AD22285-REEL | 制造商:Analog Devices 功能描述: |
| AD22286 | 功能描述:IC ACCELEROMETER DUAL 8CLCC RoHS:是 類別:傳感器，轉換器 >> 加速計 系列:iMEMS® 標準包裝:1 系列:SCA1000 軸:X，Y 加速范圍:±1.7g 靈敏度:1.2V/g 電源電壓:4.75 V ~ 5.25 V 輸出類型:數字 帶寬:50±30Hz 接口:SPI 安裝類型:表面貼裝 封裝/外殼:12-SMD 供應商設備封裝:12-SMD 其它名稱:551-1007-1 |
| AD22286-R2 | 功能描述:IC ACCELER 70G DUAL-AXIS 8CLCC RoHS:是 類別:傳感器，轉換器 >> 加速計 系列:iMEMS® 標準包裝:1 系列:SCA1000 軸:X，Y 加速范圍:±1.7g 靈敏度:1.2V/g 電源電壓:4.75 V ~ 5.25 V 輸出類型:數字 帶寬:50±30Hz 接口:SPI 安裝類型:表面貼裝 封裝/外殼:12-SMD 供應商設備封裝:12-SMD 其它名稱:551-1007-1 |
| AD22286-REEL | 功能描述:ACCELEROMETER 8CLCC 制造商:analog devices inc. 系列:iMEMS? 零件狀態(tài):停產 類型:模擬 軸:X，Y 加速度范圍:±70g（X），±35g（Y） 靈敏度（LSB/g）:- 靈敏度（mV/g）:27（X），55（Y） 帶寬:400Hz 輸出類型:模擬電壓 電壓 - 電源:4.75 V ~ 5.25 V 特性:- 工作溫度:-40°C ~ 105°C（TA） 安裝類型:表面貼裝 標準包裝:500 |
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