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参数资料
| 型号： | LY530ALTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA16 |
| 封装： | 5 X 5 MM, 1.60 MM HEIGHT, LEAD FREE, LGA-16 |
| 文件页数： | 6/30页 |
| 文件大小： | 576K |
| 代理商： | LY530ALTR |
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Mechanical and electrical specifications
LY530AL
14/30
2.6
Terminology
2.6.1
Sensitivity
A yaw rate gyroscope is a Z-axis rate device that produces a positive-going output value for
counterclockwise rotation around the axis normal to the package top. Sensitivity describes
the gain of the sensor and can be determined by applying a defined angular velocity to it.
This value changes very little over temperature and also very little over time.
2.6.2
Zero-rate level
Zero-rate level describes the actual output value if there is no angular rate present.Zero-rate
level of precise MEMS sensors is, to some extent, a result of stress to the sensor and
therefore zero-rate level can slightly change after mounting the sensor onto a printed circuit
board or after exposing it to extensive mechanical stress. This value changes very little over
temperature and also very little over time.
2.6.3
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. If the device is used as analog
component the Self-test function is off when the ST pin is connected to GND. When the ST
pin is tied to Vdd, an actuation force is applied to the sensor, emulating a definite Coriolis
force. In this case the sensor output will exhibit a voltage change in its DC level which is also
depending on the supply voltage.
For the digital use of the device, the self test function is enabled acting on ST_bit inside
OUTPUT_SEL_REG(23h).
When ST is active, the device output level is given by the algebraic sum of the signals
produced by the velocity acting on the sensor and by the electrostatic test-force. If the output
signals change within the amplitude specified in
Table 3, then the mechanical element 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 |
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