參數(shù)資料
型號(hào)： LIS202DL
廠商： 意法半導(dǎo)體
英文描述： MEMS motion sensor 2-axis - 【2g/【8g smart digital output “piccolo” accelerometer
中文描述： MEMS運(yùn)動(dòng)傳感器2軸- 【2克/【八克智能數(shù)字輸出的“小報(bào)”加速度
文件頁(yè)數(shù)： 10/36頁(yè)
文件大?。?/td> 249K
代理商： LIS202DL
Functionality
LIS202DL
10/36
3
Functionality
The LIS202DL is an ultracompact, low-power, digital output 2-axis linear accelerometer
packaged in a LGA package. The complete device includes a sensing element and an IC
interface able to take the information from the sensing element and to provide a signal to the
external world through an I
2
C/SPI serial interface.
3.1
Sensing element
A proprietary process is used to create a surface micro-machined accelerometer. The
technology allows to carry out suspended silicon structures which are attached to the
substrate in a few points called anchors and are free to move in the direction of the sensed
acceleration. To be compatible with the traditional packaging techniques a cap is placed on
top of the sensing element to avoid blocking the moving parts during the moulding phase of
the plastic encapsulation.
When an acceleration is applied to the sensor the proof mass displaces from its nominal
position, causing an imbalance in the capacitive half-bridge. This imbalance is measured
using charge integration in response to a voltage pulse applied to the capacitor.
At steady state the nominal value of the capacitors are few pF and when an acceleration is
applied the maximum variation of the capacitive load is in pF range.
3.2
IC interface
The complete measurement chain is composed by a low-noise capacitive amplifier which
converts the capacitive unbalancing of the MEMS sensor into an analog voltage that is
finally available to the user by analog-to-digital converters.
The acceleration data may be accessed through an I
2
C/SPI interface thus making the
device particularly suitable for direct interfacing with a microcontroller.
The LIS202DL features a Data-Ready signal (RDY) which indicates when a new set of
measured acceleration data is available thus simplifying data synchronization in the digital
system that uses the device.
The LIS202DL may also be configured to generate an inertial Wake-Up interrupt signal
accordingly to a programmed acceleration event along the enabled axes.
3.3
Factory calibration
The IC interface is factory calibrated for sensitivity (So) and Zero-g level (TyOff).
The trimming values are stored inside the device in a non volatile memory. Any time the
device is turned on, the trimming parameters are downloaded into the registers to be used
during the normal operation. This allows to use the device without further calibration.
相關(guān)PDF資料
PDF描述
LIS202DLTR MEMS motion sensor 2-axis - 【2g/【8g smart digital output “piccolo” accelerometer
LIS244AL MEMS motion sensor:2-axis - 【2g ultracompact linear accelerometer
LIS244ALTR MEMS motion sensor:2-axis - 【2g ultracompact linear accelerometer
LIS2L02AQ3 MEMS INERTIAL SENSOR: 2-axis - 【2g/【6g LINEAR ACCELEROMETER
LIS2L02AQ3TR MEMS INERTIAL SENSOR: 2-axis - 【2g/【6g LINEAR ACCELEROMETER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LIS202DLTR 功能描述:加速計(jì) - 板上安裝 ULTRA COMPACT LOW POWER 2 AXES LIN A RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
LIS244AL 功能描述:加速計(jì) - 板上安裝 MEMS MOTION SENSOR 2-AXIS RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
LIS244ALH 功能描述:加速計(jì) - 板上安裝 MEMS Inertial High Pef 2-Axis RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
LIS244ALHTR 功能描述:加速計(jì) - 板上安裝 MEMS Inertial High Pef 2-Axis RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
LIS244ALTR 功能描述:加速計(jì) - 板上安裝 MEMS motion snsr 2 axis RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
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