Charge Pump, PLL Circuit, And Oscillator

专利名称：Charge Pump, PLL Circuit, And Oscillator发明人：Ryo ICHIKAWA,Hisahiro ITO申请号：US17117319申请日：20201210

公开号：US20210184685A1公开日：20210617

专利附图：

摘要：A charge pump includes: a switch circuit that switches a current sourceconducted to an output node based on a signal from a phase frequency detectorincluded in a PLL circuit; a first current source that is the current source provided

between a high potential node and the switch circuit, and supplies a current to the output

node by a first conduction-type depletion mode MOS transistor forming a self-biascircuit; and a second current source that is the current source provided between a lowpotential node and the switch circuit, and draws the current from the output node by thefirst conduction-type depletion mode MOS transistor forming the self-bias circuit.

申请人：Seiko Epson Corporation

地址：Tokyo JP

国籍：JP

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