![]() ![]() ![]() Typical value of it in CMOS implementations is about 1 MOhm. The (usually internal) bias resistor R1 plays a crucially important role in the oscillator. The linear gain is highest somewhere in between the ground and power rail. The frequency of oscillations is defined by a sharp slope of the electromechanical resonator (crystal), while the gain control is based on dependence of the input on the DC bias voltage - if the DC bias (at C1) is too low to ground or too close to V cc, the gain is low. In fact, it is a fairly mathematically complicated non-linear analog circuit with automatic gain control with self-sustainable oscillation mode. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |