Crystal UnitsVideo Seminar on Crystal Unit Circuit Evaluation

Issues such as these can be caused when “oscillation stops” or “the frequency deviates significantly” in an oscillation circuit employing a crystal unit.To prevent such problems and ensure stable oscillation, an optimized circuit design is essential.

Here you can view five videos on circuit evaluation from Murata Manufacturing, the experts in the field.

Are there any concerns about the IC and crystal unit characterization? When we use oscillation circuit in wrong way, the problem with initiating start up protocols, establishing connections or improperly operating may occur in your final product. Murata has lots of IC characterization experience for automotive and industrial applications, and would like to introduce our IC and crystal characterization process to avoid these problems and get stable oscillation.

What is the Oscillation margin? Oscillation margin provides the limit at which oscillation stops. This is one of the most important parameters for the oscillation circuit. We would like to explain the measurement process to acquire the oscillation margin.

What is the Drive level? Drive level means the power consumption of the crystal unit while the oscillation circuit is in operation and it is one of the parameters listed in the datasheet. We would like to explain the measurement process for the drive level.

What is the oscillation frequency and the frequency correlation? The oscillation frequency refers to the actual frequency of the oscillation circuit when the crystal is implemented. The oscillation frequency is mainly determined by the characteristics of the crystal unit, but the characteristics of the microcomputer, external load capacitance, and stray capacitance of the PCB must be taken into consideration. We would like to explain how to measure the oscillation frequency for a crystal unit and the frequency correlation.

What is the relationship between the oscillation characteristics and the oscillation circuit constants? Here you will learn the effects of changing the damping resistance and load capacitance value. It is necessary to select the optimal circuit constants while checking the balance of each oscillation characteristic. We would like to explain the steps for the IC and crystal unit characterization process.