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参数资料
| 型号： | LIS35DETR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA14 |
| 封装： | 3 X 5 MM, 0.92 MM HEIGHT, 0.80 MM PITCH, GREEN, PLASTIC, LGA-14 |
| 文件页数： | 7/39页 |
| 文件大小： | 650K |
| 代理商： | LIS35DETR |
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LIS35DE
Functionality
Doc ID 15594 Rev 1
15/39
3
Functionality
The LIS35DE 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 LIS35DE 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 LIS35DE 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LIS-3-6 | 制造商:TDK-Lambda Corporation 功能描述:15W AC To DC Switching Power Supply - 95-132V/187-265V in - 6V 2.5A out |
| LIS3DETR | 制造商:STMicroelectronics 功能描述: 制造商:STMicroelectronics 功能描述:SADA_MEMS digital output motion sensor, ultra low-power high performance 3-axes |
| LIS3DH | 功能描述:加速计 - 板上安装 MEMS Ultra Low-Power 3-Axes "Nano" RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
| LIS3DHHTR | 功能描述:ACCELEROMETER 3-AXIS 16LGA 制造商:stmicroelectronics 系列:MEMS 零件状态:在售 类型:数字 轴:X，Y，Z 加速度范围:±2.5g 灵敏度（LSB/g）:13157（±2.5g） 灵敏度（mV/g）:- 带宽:235Hz ~ 440Hz 输出类型:SPI 电压 - 电源:1.71 V ~ 3.6 V 特性:温度传感器 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:16-LGA 供应商器件封装:16-CCLGA（5x5） 标准包装:1 |
| LIS3DHTR | 功能描述:加速计 - 板上安装 MEMS Ultra Low-Power 3-Axes "Nano" RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
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