參數(shù)資料
型號(hào)： LIS302DLHTR
廠商： STMICROELECTRONICS
元件分類(lèi)： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PBGA14
封裝： 3 X 5 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, PLASTIC, LGA-14
文件頁(yè)數(shù)： 7/37頁(yè)
文件大小： 673K
代理商： LIS302DLHTR
LIS302DLH
Functionality
Doc ID 15797 Rev 1
15/37
3
Functionality
The LIS302DLH is a nano, 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 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 the fF 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 an analog-to-digital converter.
The acceleration data may be accessed through an I2C/SPI interface thus making the
device particularly suitable for direct interfacing with a microcontroller.
The LIS302DLH 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 LIS302DLH 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 (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 active operation. This allows to use the device without further calibration.
相關(guān)PDF資料
PDF描述
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LIS331DLHTR SPECIALTY ANALOG CIRCUIT, PBCC16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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(lèi)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
LIS302DLTR8 制造商:STMicroelectronics 功能描述:LIS302DLTR8 - Tape and Reel
LIS302DLTR-CUT TAPE 制造商:ST 功能描述:LIS302DL Series 3 Axis ?/? g 3.3 V Digital Output Piccolo Accerometer - LGA-14
LIS302SG 功能描述:加速計(jì) - 板上安裝 MEMS MOTION SENSOR 3 AXIS +/-2g Piccolo RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類(lèi)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
LIS302SGTR 功能描述:加速計(jì) - 板上安裝 MEMS motion sensor 3-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(lèi)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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