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| 型号： | LIS3L02DQ-TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC44 |
| 封装： | 7 X 7 MM, 1.80 MM HEIGHT, QFN-44 |
| 文件页数： | 16/20页 |
| 文件大小： | 473K |
| 代理商： | LIS3L02DQ-TR |
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LIS3L02DQ
3.1 Terminology
3.1.1 Sensitivity
Sensitivity describes the gain of the sensor and can be determined e.g. by applying 1g acceleration to it.
As the sensor can measure DC accelerations this can be done easily by pointing the axis of interest to-
wards the center of the earth, note the output value, rotate the sensor by 180 degrees (point to the sky)
and note the output value again. By doing so,
±1g acceleration is applied to the sensor. Subtracting the
larger output value from the smaller one and divide the result by 2 leads to the actual sensitivity of the
sensor. This value changes very little over temperature (see sensitivity temperature change) and also very
little over time. The Sensitivity Tolerance describes the range of Sensitivities of a large population of sen-
sors.
3.1.2 Zero g level
Zero-g level (Offset) describes the deviation of an actual output signal from the ideal output signal if there
is no acceleration present. A sensor in a steady state on a horizontal surface will measure 0g in X axis
and 0g in Y axis whereas the Z axis will measure 1g. The output is ideally in the middle of the dynamic
range of the sensor (0000 0000 0000). A deviation from this value is called zero-g offset; the coding is
based two's complement. Offset is to some extend a result of stress to a precise MEMS sensor and there-
fore the offset can slightly change after mounting the sensor onto a printed circuit board or exposing it to
extensive mechanical stress. Offset changes little over temperature, see “Zero g level change vs. temper-
ature”. The Zero-g level of an individual sensor is very stable over lifetime. The Zero g level tolerance de-
scribes the range of zero g levels of a population of sensors.
3.1.3 Self Test
Self Test allows to test the mechanical and electrical part of the sensor. By applying a digital code via the
serial interface to the sensor an internal reference is switched to a certain area of the sensor and creates
a defined deflection of the moveable structure. The sensor will generate a defined signal and the interface
chip will perform the signal conditioning. If the output signal changes within the specified amplitude than
the sensor is working properly and the parameters of the interface chip are within tolerance. Self Test
changes linearly with power supply.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LIS3L02DS | 制造商:STMicroelectronics 功能描述: |
| LIS3L06AL | 功能描述:加速计 - 板上安装 3-axis +/-2g/+/-6g MEMS Intertial Sensr 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 |
| LIS3L06AL_06 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:MEMS INERTIAL SENSOR-3-axis - +/-2g/6g ultracompact linear accelerometer |
| LIS3L06ALTR | 功能描述:加速计 - 板上安装 MEMS INERTIAL snsr 3 axis 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 |
| LIS3LV02DL | 功能描述:加速计 - 板上安装 MEMS INERTIAL SENSOR 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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