发明授权
- 专利标题： Optical modules and methods of making the optical modules
- 专利标题（中）： 光模块及其制造方法
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申请号： US09930806申请日： 2001-08-15
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公开(公告)号： US06979810B2公开(公告)日： 2005-12-27
- 发明人: Norio Chujo , Keiichi Yamamoto , Akio Osaki , Katsunori Hirano , Takayuki Nakao , Tomoaki Shimotsu , Atsushi Hasegawa , Tetsuya Aoki , Takeshi Yamashita
- 申请人： Norio Chujo , Keiichi Yamamoto , Akio Osaki , Katsunori Hirano , Takayuki Nakao , Tomoaki Shimotsu , Atsushi Hasegawa , Tetsuya Aoki , Takeshi Yamashita
- 申请人地址： JP Yokohama
- 专利权人： OpNext Japan, Inc.
- 当前专利权人： OpNext Japan, Inc.
- 当前专利权人地址： JP Yokohama
- 代理机构： Townsend and Townsend and Crew LLP
- 主分类号： H01L31/10
- IPC分类号： H01L31/10 ; H01L31/107 ; H03L7/085 ; H03L7/091 ; H04B10/07 ; H04B10/2507 ; H04B10/40 ; H04B10/50 ; H04B10/60 ; H04L7/033 ; H01J40/14 ; H03D3/24 ; H04B10/06
摘要：
A sample & hold type phase detector is used in a CDR IC and, in jitter transfer bandwidth adjustment, VCO output waveforms 90° out of phase with each other can be inputted to the phase detector, whereby a jitter transfer bandwidth can be calculated by only the measurement of frequency and of a DC voltage and it is possible to make a jitter transfer bandwidth adjustment in DC test for IC.
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