CMS300 (in-plane)


我们的 CMS MEMS 组合传感器 是一款组合式单轴陀螺仪和双轴低 g 加速计。 此设备有数字 SPI 输出,用户可选择设备的动态范围和带宽。 CMS300 平装在板上,组合起来可以使用单板 (PCBA) 测量所有轴。 用户可以选择三个通道各自的测量范围和带宽。 用户可以独立选择所有三个通道的动态范围和带宽,以获得最佳灵敏度。

请通过以下方式直接联系我们 sales@siliconsensing.com

Supply Voltage3.3V
Angular Random Walk0.40º/√hr
Bias Instability10°/hr
Bandwidth (nominal)45, 55, 90 or 110Hz Acc; 45, 62, 95 or 190Hz (user selectable)
Operating Temperature-40°C to +125°C
Typ. Current Consumption8mA
Angular Rate Range±150°/s to ±300°/s
Axes of Acceleration2
Acceleration Range±2.5 to ±10g
Velocity Random Walk<0.05 m/s/√hr
Rate SF over Temp±2.0%
Rate Bias Over Temperature±1.0˚/s typ ±1.75˚/s max
Acc Bias over Temp±30mg to ±75mg
Acc SF over Temp±2.5%
Baud RateSPI msg rate max 10kHz clock rate 7MHz
Accelerometer Bias Instability<0.05mg
Vibration Rectification Error0.001°/s/g2 rms to 0.003°/s/g2 rms
Do I need to do anything special to minimize the misalignment of CMS combi-sensors when mounting them on a PCB?

The user of our combi-sensors will be interested in the misalignments of the accelerometers and the gyroscope to theoretical datums on the PCB.
The datasheet for the CMS300 quotes a potential misalignment of 1.5% to the package. Mounting of the CMS300 is straightforward, and no particular allowance needs to be made for mounting inaccuracy.

Mounting the CMS390 is more difficult. The package is very tall for its width, and the mounting face is not completely flat. The datasheet includes an additional allowance for the lack of flatness of this mounting face, and with reasonable care in placement, the datasheet limit of 3% should be achieved. If additional accuracy is required, the use of special fixtures or jigs could improve the perpendicularity of the package and hence minimize the misalignment of the sensor to the PCB.
If there is a processing capability present with the system, any residual misalignments errors can be corrected within the processor.

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