參數(shù)資料
型號(hào)： ADXL322JCP-REEL
廠商： ANALOG DEVICES INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： Small and Thin +-2 g Accelerometer
中文描述： SPECIALTY ANALOG CIRCUIT, PBCC16
封裝： 4 X 4 MM, 1.45 MM HEIGHT, LEAD FREE, PLASTIC, LFCSP-16
文件頁(yè)數(shù)： 11/16頁(yè)
文件大?。?/td> 286K
代理商： ADXL322JCP-REEL
ADXL322
THEORY OF OPERATION
The ADXL322 is a complete acceleration measurement system
on a single monolithic IC. The ADXL322 has a measurement
range of ±2
g
. It contains a polysilicon surface micromachined
sensor and signal conditioning circuitry to implement an open-
loop acceleration measurement architecture. The output signals
are analog voltages that are proportional to acceleration. The
accelerometer measures static acceleration forces, such as
gravity, which allows it to be used as a tilt sensor.
Rev. 0 | Page 11 of 16
The sensor is a polysilicon surface-micromachined structure
built on top of a silicon wafer. Polysilicon springs suspend the
structure over the surface of the wafer and provide a resistance
against acceleration forces. Deflection of the structure is
measured using a differential capacitor that consists of inde-
pendent fixed plates and plates attached to the moving mass.
The fixed plates are driven by 180° out-of-phase square waves.
Acceleration deflects the beam and unbalances the differential
capacitor, resulting in an output square wave whose amplitude
is proportional to acceleration. Phase-sensitive demodulation
techniques are then used to rectify the signal and determine
the direction of the acceleration.
The demodulator’s output is amplified and brought off-
chip through a 32 kΩ resistor. The user then sets the signal
bandwidth of the device by adding a capacitor. This filtering
improves measurement resolution and helps prevent aliasing.
PERFORMANCE
Rather than using additional temperature compensation
circuitry, innovative design techniques were used to ensure
built-in high performance. As a result, there is neither quanti-
zation error nor nonmonotonic behavior, and temperature
hysteresis is very low (typically less than 5 m
g
over the 20°C
to +70°C temperature range).
Figure 11 shows the zero
g
output performance of eight parts
(X- and Y-axis) over a 20°C to +70°C temperature range.
Figure 14 demonstrates the typical sensitivity shift over tem-
perature for supply voltages of 3 V. This is typically better than
±1% over the 20°C to +70°C temperature range.
相關(guān)PDF資料
PDF描述
ADXL323 Small, Low Power, 2-Axis 【3 g i MEMS Accelerometer
ADXL323KCPZ Small, Low Power, 2-Axis 【3 g i MEMS Accelerometer
ADXL323KCPZ-RL Small, Low Power, 2-Axis 【3 g i MEMS Accelerometer
ADXL330 Small, Low Power, 3-Axis 【3 g i MEMS Accelerometer
ADXL330KCPZ Small, Low Power, 3-Axis 【3 g i MEMS Accelerometer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADXL322JCP-REEL7 功能描述:IC ACCELEROMETER DUAL 16LFCSP RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 加速計(jì) 系列:- 標(biāo)準(zhǔn)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(shù)字 帶寬:50±30Hz 接口:SPI 安裝類型:表面貼裝 封裝/外殼:12-SMD 供應(yīng)商設(shè)備封裝:12-SMD 其它名稱:551-1007-1
ADXL323 制造商:AD 制造商全稱:Analog Devices 功能描述:Small, Low Power, 2-Axis 【3 g i MEMS Accelerometer
ADXL323KCPZ 功能描述:IC ACCELEROMETER LP 16LFCSP RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 加速計(jì) 系列:iMEMS® 標(biāo)準(zhǔn)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(shù)字 帶寬:50±30Hz 接口:SPI 安裝類型:表面貼裝 封裝/外殼:12-SMD 供應(yīng)商設(shè)備封裝:12-SMD 其它名稱:551-1007-1
ADXL323KCPZ-RL 功能描述:IC ACCELEROMETER LP 16-LFCSP RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 加速計(jì) 系列:iMEMS® 標(biāo)準(zhǔn)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(shù)字 帶寬:50±30Hz 接口:SPI 安裝類型:表面貼裝 封裝/外殼:12-SMD 供應(yīng)商設(shè)備封裝:12-SMD 其它名稱:551-1007-1
ADXL323KCPZ-RL7 制造商:Analog Devices 功能描述: 制造商:Rochester Electronics LLC 功能描述:
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