angular rate measurements from Raw values

Question

Hi, 
 I am trying to read angular measurements from the ADIS16505. I came across the following formula to read the values. However, I don't understand the need to multiply the register values by 1/2621440 term. 
 
 RATE_X_IMU = f(X_GYRO_OUT, X_GYRO_LOW) * 1/2621440 * &pi;/180 (rad/s) RATE_Y_IMU = f(Y_GYRO_OUT, Y_GYRO_LOW) * 1/2621440 * &pi;/180 (rad/s) RATE_Z_IMU = f(Z_GYRO_OUT, Z_GYRO_LOW) * 1/2621440 * &pi;/180 (rad/s) 
 
 Could you please tell me why do I need to multiply by 1/2621440 to get the angular rates?

RubenDiaz · Accepted Answer

Good morning Hammi, 
 Thank you for your question. That term is the sensitivity of the ADIS16505-2 gyroscope for a 32 bit data format, it is necessary for converting the digital values of the register to &ordm;/sec units. 
 Best regards, 
 Ruben)

MarioSM · Answer

Hello Hammi excuse the delay on this one, I just missed this second message.

Here you have a comprehensive introduction to IMUs from the ADI apps team: High-Performance MEMS; What does that mean? - Recordings - Webinar - EngineerZone

You could also refer to this article to get a taste on the role that IMUs play on modern applications: High Performance Inertial Sensing Solutions Enable Autonomous Machine Applications | Analog Devices

hope this helps, wish you a great weekend,

Mario SM

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angular rate measurements from Raw values

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