发明名称 Current reuse frequency divider and method thereof and voltage control oscillator module and phase-locked loop using the same
摘要 A current reuse frequency divider including a first latch circuit and a second latch circuit is provided. The first latch circuit includes a first transistor pair and a second transistor pair. The first latch circuit receives a first differential oscillation signal through bodies of the first transistor pair and the second transistor pair and divides the frequency of the first differential oscillation signal to generate a second differential oscillation signal. The second latch circuit is coupled to the first latch circuit and includes a third transistor pair and a fourth transistor pair. The second latch circuit receives the first differential oscillation signal through bodies of the third transistor pair and the fourth transistor pair and divides the frequency of the first differential oscillation signal to generate a third differential oscillation signal.
申请公布号 US8829966(B2) 申请公布日期 2014.09.09
申请号 US201213727612 申请日期 2012.12.27
申请人 Industrial Technology Research Institute 发明人 Chang Chih-Hsiang;Cheng Nai-Chen;Lee Yu;Yang Ching-Yuan
分类号 G06F1/04;H03K3/00;H03B19/14 主分类号 G06F1/04
代理机构 Jianq Chyun IP Office 代理人 Jianq Chyun IP Office
主权项 1. A current reuse frequency divider, comprising: a first latch circuit, comprising a first transistor pair and a second transistor pair, wherein the first latch circuit receives a first differential oscillation signal through bodies of the first transistor pair and the second transistor pair and divides a frequency of the first differential oscillation signal to generate a second differential oscillation signal; and a second latch circuit, coupled to the first latch circuit, and comprising a third transistor pair and a fourth transistor pair, wherein the second latch circuit receives the first differential oscillation signal through bodies of the third transistor pair and the fourth transistor pair and divides the frequency of the first differential oscillation signal to generate a third differential oscillation signal, wherein the first latch circuit further comprises: a first transistor, having a first source/drain;a second transistor, having a first source/drain, wherein the first transistor and the second transistor form the first transistor pair;a third transistor, having a gate coupled to the first source/drain of the first transistor, a first source/drain coupled to the first source/drain of the second transistor, and a second source/drain coupled to a second source/drain of the second transistor; anda fourth transistor, having a gate coupled to the first source/drain of the second transistor, a first source/drain coupled to the first source/drain of the first transistor, and a second source/drain coupled to a second source/drain of the first transistor, wherein the third transistor and the fourth transistor form the second transistor pair.
地址 Hsinchu TW