MLX90609

Angular Rate Sensor (Standard version)

390109060901

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Data Sheet

Rev 008

February/08

Figure 9-3. MLX90609 Bottom View

Figure 9-4. Land Pattern Design (top view)

10. Glossary of Terms

Angular Rate Sensor

A sensor that measures rotational velocity measured in degrees per second around its sensitive

axis. Angular rate sensors are sometimes referred to as gyro or gyroscope.

Bandwidth

The input signal frequency range from DC (zero frequency) up to the frequency where a -3dB

amplitude decay (between mechanical input and rate output) is observed. In the case of the

present device, the bandwidth is user selectable by means of an external capacitor.

Coriolis Effect

Coriolis Effect is an inertial force described by the 19th-century engineer-mathematician Gustave-

Gaspard Coriolis in 1835. Coriolis showed that, if the ordinary Newtonian laws of motion of bodies

are to be used in a rotating frame of reference, an inertial force, acting to the right of the direction of

body motion for counterclockwise rotation of the reference frame or to the left for clockwise rotation,

must be included in the motion equations.

In effect, the Coriolis force is an apparent deflection of the path of an object that moves within a

rotating coordinate system. The object does not actually deviate from its path, but it appears to do

so because of the motion of the coordinate system.