The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2021
Filed:
Feb. 25, 2020
Montage Technology Co., Ltd., Shanghai, CN;
MONTAGE TECHNOLOGY CO., LTD., Shanghai, CN;
Abstract
A fast phase frequency includes two fast pulsed-latches, a NAND gate, and an adjustable delay circuit, where the fast pulsed-latches include a pulse generating circuit, a reset circuit, and an output latch circuit. The pulse generating circuit is configured to generate a power supply pulse signal when a rising edge of the clock signal arrives, the power supply pulse signal causing the input of the output latch circuit to be a low level. The output latch circuit is configured to maintain its current output state when the clock signal or the reset signal is invalid, and the reset circuit is configured to set the input of the output latch circuit to be a high level. By using fast pulsed-latches with clock and reset control, the fast phase frequency detector shortens the reset loop delay and increases the maximum operating frequency of the phase frequency detector.