TW357453B - Digitally-controlled oscillator with switched-capacitor frequency selection - Google Patents
Digitally-controlled oscillator with switched-capacitor frequency selectionInfo
- Publication number
- TW357453B TW357453B TW086116789A TW86116789A TW357453B TW 357453 B TW357453 B TW 357453B TW 086116789 A TW086116789 A TW 086116789A TW 86116789 A TW86116789 A TW 86116789A TW 357453 B TW357453 B TW 357453B
- Authority
- TW
- Taiwan
- Prior art keywords
- digitally
- controlled oscillator
- switched
- output
- frequency selection
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 title abstract 3
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
- H03K3/03—Astable circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
- H03L7/0991—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
- H03J2200/10—Tuning of a resonator by means of digitally controlled capacitor bank
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Electric Clocks (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3072396P | 1996-11-08 | 1996-11-08 | |
US3686597P | 1997-02-05 | 1997-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW357453B true TW357453B (en) | 1999-05-01 |
Family
ID=26706391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW086116789A TW357453B (en) | 1996-11-08 | 1997-11-28 | Digitally-controlled oscillator with switched-capacitor frequency selection |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0841754A3 (zh) |
JP (1) | JPH1127142A (zh) |
TW (1) | TW357453B (zh) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6181218B1 (en) | 1998-05-19 | 2001-01-30 | Conexant Systems, Inc. | High-linearity, low-spread variable capacitance array |
US6359948B1 (en) | 1999-02-17 | 2002-03-19 | Triquint Semiconductor Corporation | Phase-locked loop circuit with reduced jitter |
EP1169657A4 (en) * | 1999-03-17 | 2003-03-05 | Input Output Inc | CALIBRATION OF SENSORS. |
CN100505514C (zh) * | 2001-11-30 | 2009-06-24 | Nxp股份有限公司 | 包括具有用于调整调制信号的至少一个特征信号值的调整装置的电路的设备 |
WO2006038190A1 (en) * | 2004-10-08 | 2006-04-13 | Koninklijke Philips Electronics N.V. | Array of capacitors switched by mos transistors |
US20060267701A1 (en) * | 2005-05-27 | 2006-11-30 | Robert Eilers | Method and system for dynamically calculating values for tuning of voltage-controlled crystal oscillators |
US7672645B2 (en) | 2006-06-15 | 2010-03-02 | Bitwave Semiconductor, Inc. | Programmable transmitter architecture for non-constant and constant envelope modulation |
US9461608B2 (en) | 2007-03-05 | 2016-10-04 | Nxp B.V. | Radio frequency filter |
JP2008287387A (ja) * | 2007-05-16 | 2008-11-27 | Renesas Technology Corp | 非接触電子装置 |
US8073092B2 (en) * | 2008-06-19 | 2011-12-06 | Microchip Technology Incorporated | Automatic synchronization of an internal oscillator to an external frequency reference |
US8085099B2 (en) * | 2010-04-06 | 2011-12-27 | Sandisk Technologies Inc. | Self-calibrating relaxation oscillator based clock source |
JP6021410B2 (ja) * | 2012-04-26 | 2016-11-09 | ソニーセミコンダクタソリューションズ株式会社 | 発振器、発振方法、イメージセンサ、及び、撮像装置 |
KR102436360B1 (ko) * | 2017-12-20 | 2022-08-25 | 에스케이하이닉스 주식회사 | 모니터링 회로를 구비하는 반도체 장치 |
CN108377148B (zh) * | 2018-04-27 | 2024-03-08 | 深圳讯达微电子科技有限公司 | 一种基于开关电容阵列的锁相环环路滤波器及锁相环 |
US10797713B1 (en) * | 2019-08-12 | 2020-10-06 | Realtek Semiconductor Corp. | High-speed high-resolution digitally-controlled oscillator and method thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2985489B2 (ja) * | 1992-03-31 | 1999-11-29 | 日本電気株式会社 | 位相同期ループ |
JP2842492B2 (ja) * | 1992-04-22 | 1999-01-06 | 三菱電機株式会社 | 位相同期ループ回路 |
US5191301A (en) * | 1992-05-12 | 1993-03-02 | International Business Machines Corporation | Integrated differential voltage controlled ring oscillator |
US5281927A (en) * | 1993-05-20 | 1994-01-25 | Codex Corp. | Circuit and method of controlling a VCO with capacitive loads |
GB2288086A (en) * | 1994-03-28 | 1995-10-04 | Hewlett Packard Co | Digital phase-locked loop using a numerically-controlled oscillator |
-
1997
- 1997-11-07 EP EP97119505A patent/EP0841754A3/en not_active Withdrawn
- 1997-11-10 JP JP9345670A patent/JPH1127142A/ja active Pending
- 1997-11-28 TW TW086116789A patent/TW357453B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0841754A3 (en) | 1998-12-16 |
JPH1127142A (ja) | 1999-01-29 |
EP0841754A2 (en) | 1998-05-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |