Zakładka z wyszukiwarką danych komponentów
Selected language     Polish  ▼
Nazwa części
         Szczegóły


ADXL322JCP Datasheet(Arkusz danych) 11 Page - Analog Devices

Numer części ADXL322JCP
Szczegółowy opis  Small and Thin -2 g Accelerometer
Pobierz  16 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo 

 11 page
background image
ADXL322
Rev. 0 | Page 11 of 16
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.
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 mg 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.




Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16 


Datasheet Download



Powiązane numery części

Numer częściSzczegółowy opis komponentówHtml ViewProducent
NTTD4401FFETKY Power MOSFET and Schottky Diode 1 2 3 4 5 MoreON Semiconductor
SY89531L3.3V PRECISION 33MHz to 500MHz PROGRAMMABLE LVPECL AND HSTL BUS CLOCK SYNTHESIZER 1 2 3 4 5 MoreMicrel Semiconductor
ADN2806622 Mbps Clock and Data Recovery IC 1 2 3 4 5 MoreAnalog Devices
ADT7488ASST Digital Temperature Sensor and Voltage Monitor 1 2 3 4 5 MoreAnalog Devices
TPS624032.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package 1 2 3 4 5 MoreTI store
ADT7408+-2 C Accurate 12-Bit Digital Temperature Sensor 1 2 3 4 5 MoreAnalog Devices
LPT3535Inductors/Transformers Customizable Surface Mount Torodial Kool-Mu Powered Iron and MPP Cores 1 2 3 Vishay Siliconix
ADCMP341Dual Comparators with 400mV Reference and programmable Hysteresis 1 2 3 4 5 MoreAnalog Devices
ADN2813Continuous Rate 10 Mb/s to 1.25 Gb/s Clock and Data Recovery IC with Integrated Limiting Amp 1 2 3 4 5 MoreAnalog Devices
DS90LV049HHigh Temperature 3V LVDS Dual Line Driver and Receiver Pair 1 2 3 4 5 MoreNational Semiconductor (TI)

Link URL

Czy Alldatasheet okazała się pomocna?  [ DONATE ]  

O Alldatasheet   |   Reklama   |   Kontakt   |   Polityka prywatności   |   Dodaj do ulubionych   |   Linki   |   Lista producentów
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl