参数资料
型号: LIS3LV02DL
厂商: STMICROELECTRONICS
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PBGA16
封装: 4.40 X 7.50 MM, 1 MM HEIGHT, GREEN, PLASTIC, LGA-16
文件页数: 10/48页
文件大小: 681K
代理商: LIS3LV02DL
Mechanical and electrical specifications
LIS3LV02DL
18/48
2.5
Terminology
2.5.1
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 towards the center of the Earth, noting the output value, rotating
the sensor by 180 degrees (point to the sky) and noting the output value again. By doing so,
±1g acceleration is applied to the sensor. Subtracting the larger output value from the
smaller one and dividing the result by 2 leads to the actual sensitivity of the sensor. This
value changes very little over temperature and also very little over time. The Sensitivity
Tolerance describes the range of Sensitivities of a large population of sensors.
2.5.2
Zero-g level
Zero-g level Offset (Off) 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 (content of OUT registers
00h, 00h with 16 bit representation, data expressed as 2’s complement number). A deviation
from ideal value in this case is called Zero-g offset. Offset is to some extent a result of stress
to a precise MEMS sensor and therefore 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. temperature”. The Zero-g level
of an individual sensor is stable over lifetime. The Zero-g level tolerance describes the range
of Zero-g levels of a population of sensors.
2.5.3
Self test
Self Test allows to test the mechanical and electric part of the sensor, allowing the seismic
mass to be moved by means of an electrostatic test-force. The Self Test function is off when
the self-test bit of CTRL_REG1 (control register 1) is programmed to ‘0‘. When the self-test
bit of CTRL_REG1 is programmed to ‘1‘ an actuation force is applied to the sensor,
simulating a definite input acceleration. In this case the sensor outputs will exhibit a change
in their DC levels which is related to the selected full scale and depending on the Supply
Voltage through the device sensitivity. When Self Test is activated, the device output level is
given by the algebraic sum of the signals produced by the acceleration acting on the sensor
and by the electrostatic test-force. If the output signals change within the amplitude
specified inside Table 3 or 4 then the sensor is working properly and the parameters of the
interface chip are within the defined specification.
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相关代理商/技术参数
参数描述
LIS3LV02DL_08 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:MEMS inertial sensor 3-axis - 【2g/【6g digital output low voltage linear accelerometer
LIS3LV02DLTR 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-TR 制造商:STMicroelectronics 功能描述:MEMS INERTIAL SENSOR
LIS3LV02DQ 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
LIS3LV02DQ-TR 功能描述:加速计 - 板上安装 INERTIAL SENSOR Lo Vltg 3Axis 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