High speed multi moduli CMOS clock divider
Abstract:
An electronic circuit which is a high speed CMOS logic circuit to divide the frequency of an input signal is provided. The electronic circuit comprises a ring oscillator. The ring oscillator comprises a plurality of gated inverters. At least one of the gated inverters is configured to receive an oscillating signal and a control signal at two complementary inputs. The electronic circuit is configured to be partially gated such that a divide ratio is selectable. By means of clock partial gating, open loop clock buffering and avoiding slow combinatory logic in the data path, a very high speed multi-moduli clock divider is achieved.
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