TWI263406B - Low voltage operating ring oscillator with almost constant delay time - Google Patents
Low voltage operating ring oscillator with almost constant delay timeInfo
- Publication number
- TWI263406B TWI263406B TW94120157A TW94120157A TWI263406B TW I263406 B TWI263406 B TW I263406B TW 94120157 A TW94120157 A TW 94120157A TW 94120157 A TW94120157 A TW 94120157A TW I263406 B TWI263406 B TW I263406B
- Authority
- TW
- Taiwan
- Prior art keywords
- constant
- delay time
- ring oscillator
- low voltage
- constant delay
- Prior art date
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- Pulse Circuits (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Methods and circuits for chain ring oscillators having a constant delay time over variations of temperature and variations of semiconductor manufacturing process while requiring low operating voltage only have been disclosed. A system current source includes a constant voltage circuit generating a constant voltage and hence a constant current via a resistance element. Main parts of the constant voltage circuit are an operational amplifier and a bandgap reference circuit. Using a series of current mirrors the constant currents are mirrored to current sources contained in each of n-inverter stages of the chain ring oscillator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94120157A TWI263406B (en) | 2005-06-17 | 2005-06-17 | Low voltage operating ring oscillator with almost constant delay time |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94120157A TWI263406B (en) | 2005-06-17 | 2005-06-17 | Low voltage operating ring oscillator with almost constant delay time |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI263406B true TWI263406B (en) | 2006-10-01 |
TW200701645A TW200701645A (en) | 2007-01-01 |
Family
ID=37966366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW94120157A TWI263406B (en) | 2005-06-17 | 2005-06-17 | Low voltage operating ring oscillator with almost constant delay time |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI263406B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102064801A (en) * | 2010-11-08 | 2011-05-18 | 中国兵器工业集团第二一四研究所苏州研发中心 | All-silicon clock generator realized on basis of complementary metal oxide semiconductor (CMOS) process |
-
2005
- 2005-06-17 TW TW94120157A patent/TWI263406B/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102064801A (en) * | 2010-11-08 | 2011-05-18 | 中国兵器工业集团第二一四研究所苏州研发中心 | All-silicon clock generator realized on basis of complementary metal oxide semiconductor (CMOS) process |
CN102064801B (en) * | 2010-11-08 | 2013-09-18 | 中国兵器工业集团第二一四研究所苏州研发中心 | All-silicon clock generator realized on basis of complementary metal oxide semiconductor (CMOS) process |
Also Published As
Publication number | Publication date |
---|---|
TW200701645A (en) | 2007-01-01 |
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