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參數(shù)資料
| 型號： | LIS302DL |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQCC14 |
| 封裝： | 3 X 5 MM, 0.92 MM HEIGHT, 0.80 MM PITCH, GREEN, PLASTIC, TLGA-14 |
| 文件頁數(shù)： | 8/42頁 |
| 文件大小： | 602K |
| 代理商： | LIS302DL |
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Functionality
LIS302DL
16/42
3
Functionality
The LIS302DL is a ultracompact, low-power, digital output 3-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 I2C/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 sense 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 fF range.
3.2
IC interface
The complete measurement chain is composed by a low-noise capacitive amplifier which
converts into an analog voltage the capacitive unbalancing of the MEMS sensor and by
analog-to-digital converters.
The acceleration data may be accessed through an I2C/SPI interface thus making the
device particularly suitable for direct interfacing with a microcontroller.
The LIS302DL 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 LIS302DL may also be configured to generate an inertial Wake-Up and Free-Fall
interrupt signal accordingly to a programmed acceleration event along the enabled axes.
Both Free-Fall and Wake-Up can be available simultaneously on two different pins.
3.3
Factory calibration
The IC interface is factory calibrated for sensitivity (So) and Zero-g level (Off).
The trimming values are stored inside the device by 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 the user to use the device without further
calibration.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LIS302DLTR8 | SPECIALTY ANALOG CIRCUIT, PQCC14 |
| LIS331ALTR | SPECIALTY ANALOG CIRCUIT, QCC16 |
| LIS331DLF | SPECIALTY ANALOG CIRCUIT, PBCC16 |
| LIS331DLHTR | SPECIALTY ANALOG CIRCUIT, PBCC16 |
| LIS331DLMTR | SPECIALTY ANALOG CIRCUIT, PBCC16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LIS302DL_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MEMS motion sensor 3-axis - 【2g/【8g smart digital output “piccolo” accelerometer |
| LIS302DL_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MEMS motion sensor 3-axis - ?± 2g/?± 8g smart digital output a??piccoloa?? accelerometer |
| LIS302DLH | 功能描述:加速計(jì) - 板上安裝 3 AXIS DIGITAL MEMS ACCELEROMETER 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 |
| LIS302DLHTR | 功能描述:加速計(jì) - 板上安裝 MEMS digital output L-Power Motion Snsr 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 |
| LIS302DLTR | 功能描述:加速計(jì) - 板上安裝 MEMS Motion Sensor 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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