TWI263406B - Low voltage operating ring oscillator with almost constant delay time - Google Patents

Low voltage operating ring oscillator with almost constant delay time

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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
Application number
TW94120157A
Other languages
Chinese (zh)
Other versions
TW200701645A (en
Inventor
Jen-Shou Hsu
Original Assignee
Etron Technology Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Etron Technology Inc filed Critical Etron Technology Inc
Priority to TW94120157A priority Critical patent/TWI263406B/en
Application granted granted Critical
Publication of TWI263406B publication Critical patent/TWI263406B/en
Publication of TW200701645A publication Critical patent/TW200701645A/en

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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.
TW94120157A 2005-06-17 2005-06-17 Low voltage operating ring oscillator with almost constant delay time TWI263406B (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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