JPS6424631A - Phase locked loop oscillator - Google Patents
Phase locked loop oscillatorInfo
- Publication number
- JPS6424631A JPS6424631A JP62182761A JP18276187A JPS6424631A JP S6424631 A JPS6424631 A JP S6424631A JP 62182761 A JP62182761 A JP 62182761A JP 18276187 A JP18276187 A JP 18276187A JP S6424631 A JPS6424631 A JP S6424631A
- Authority
- JP
- Japan
- Prior art keywords
- output
- pulse
- saw
- comparison
- leading edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To output an output signal with less jitter by outputting a phase comparison output being a stepwise signal of pulse amplitude modulation wave corresponding to a phase difference between an input pulse and a comparison pulse. CONSTITUTION:A phase comparator 6 consists of a saw-tooth wave generating circuit 1 and a sample-hold circuit 2, and the saw-tooth wave generating circuit 1 outputs a saw-tooth wave 11 synchronously with the leading edge of an input pulse 10. The sample-hold circuit 2 samples an output level of the saw-tooth wave 11 at each leading edge of a comparison pulse 10, holds output levels V1, V2, V3 till the leading edge of the next comparison pulse 15 respectively and outputs the result as a phase comparison output 12. Since the band width where the side band wave exists is made narrow, the increase in jitter in the output signal is decreased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62182761A JPS6424631A (en) | 1987-07-21 | 1987-07-21 | Phase locked loop oscillator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62182761A JPS6424631A (en) | 1987-07-21 | 1987-07-21 | Phase locked loop oscillator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6424631A true JPS6424631A (en) | 1989-01-26 |
Family
ID=16123967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62182761A Pending JPS6424631A (en) | 1987-07-21 | 1987-07-21 | Phase locked loop oscillator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6424631A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008123542A1 (en) * | 2007-03-29 | 2008-10-16 | System Lsi Co. Ltd. | Pll circuit device and control device |
-
1987
- 1987-07-21 JP JP62182761A patent/JPS6424631A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008123542A1 (en) * | 2007-03-29 | 2008-10-16 | System Lsi Co. Ltd. | Pll circuit device and control device |
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