- 专利标题: Phase-locked loop (PLL) with direct feedforward circuit
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申请号: US17146510申请日: 2021-01-12
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公开(公告)号: US11418201B2公开(公告)日: 2022-08-16
- 发明人: Debapriya Sahu , Rittu Sachdev
- 申请人: TEXAS INSTRUMENTS INCORPORATED
- 申请人地址: US TX Dallas
- 专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人地址: US TX Dallas
- 代理商 Ebby Abraham; Charles A. Brill; Frank D. Cimino
- 主分类号: H03L7/093
- IPC分类号: H03L7/093 ; H03L7/083 ; H03L7/095
摘要:
A phase-locked loop (PLL) device includes: 1) a detector configured to output an error signal to indicate a phase offset between a feedback clock signal and a reference clock signal; 2) a charge pump coupled to the detector and configured to output a charge pump signal based on the error signal; 3) an integrator with a feedback path, an input node, a reference node, and an output node, wherein the input node is coupled to the charge pump and receives the charge pump signal; 4) a voltage-controlled oscillator (VCO) coupled to the output node of the integrator via a resistor; and 5) a feedforward circuit coupled directly to the detector and configured to apply an averaged version of the error signal to correct a voltage level received by the VCO.
公开/授权文献
- US20210135675A1 PHASE-LOCKED LOOP (PLL) WITH DIRECT FEEDFORWARD CIRCUIT 公开/授权日:2021-05-06
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