Invention Grant
- Patent Title: Phase-locked loop (PLL) with direct feedforward circuit
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Application No.: US17146510Application Date: 2021-01-12
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Publication No.: US11418201B2Publication Date: 2022-08-16
- Inventor: Debapriya Sahu , Rittu Sachdev
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Ebby Abraham; Charles A. Brill; Frank D. Cimino
- Main IPC: H03L7/093
- IPC: H03L7/093 ; H03L7/083 ; H03L7/095

Abstract:
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.
Public/Granted literature
- US20210135675A1 PHASE-LOCKED LOOP (PLL) WITH DIRECT FEEDFORWARD CIRCUIT Public/Granted day:2021-05-06
Information query
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