专利名称:OSCILLATOR WITH DYNAMIC GAIN
CONTROL
发明人:Eduardo Viegas申请号:US15471034申请日:20170328
公开号:US20170201258A1公开日:20170713
专利附图:
摘要:In one form, an oscillator includes an oscillator core circuit and a dynamic gaincontrol circuit. The oscillator core circuit is for connection to a frequency referenceelement and provides a first clock signal using a negative gain element having a gain
determined by a gain control signal. The dynamic gain control circuit is coupled to theoscillator core circuit for calibrating the gain control signal to a startup value based onoscillations reaching a first threshold during a startup state, and calibrating the gaincontrol signal to a steady-state value based on oscillations falling to a second thresholdafter an end of the startup state and before entering a steady state. The first thresholdis higher than the second threshold. The dynamic gain control circuit operates theoscillator core circuit during the steady state using the steady-state value.
申请人:Silicon Laboratories Inc.
地址:Austin TX US
国籍:US
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