TW349264B - Method and device for continuous-time filtering - Google Patents
Method and device for continuous-time filteringInfo
- Publication number
- TW349264B TW349264B TW086108310A TW86108310A TW349264B TW 349264 B TW349264 B TW 349264B TW 086108310 A TW086108310 A TW 086108310A TW 86108310 A TW86108310 A TW 86108310A TW 349264 B TW349264 B TW 349264B
- Authority
- TW
- Taiwan
- Prior art keywords
- continuous
- time filtering
- capacitance
- pole frequency
- digital cmos
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 4
- 238000001914 filtration Methods 0.000 title abstract 2
- 239000003990 capacitor Substances 0.000 abstract 2
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/34—DC amplifiers in which all stages are DC-coupled
- H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
- H03F3/345—DC amplifiers in which all stages are DC-coupled with semiconductor devices only with field-effect devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/0422—Frequency selective two-port networks using transconductance amplifiers, e.g. gmC filters
- H03H11/0427—Filters using a single transconductance amplifier; Filters derived from a single transconductor filter, e.g. by element substitution, cascading, parallel connection
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/331—Sigma delta modulation being used in an amplifying circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Networks Using Active Elements (AREA)
- Amplifiers (AREA)
Abstract
A method for continuous-time filtering in a digital CMOS process, which is characterized in using current mirrors to produce continuous-time filters in digital CMOS processes, the pole frequency being determined by the transconductance of an MOS transistor and the capacitance of a capacitor seen at its gate; in which the capacitance defining the pole frequency can be in any form, including a capacitor outside a chip.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9602824A SE508697C2 (en) | 1996-07-19 | 1996-07-19 | Method and apparatus for time continuous filtration in digital CMOS process |
Publications (1)
Publication Number | Publication Date |
---|---|
TW349264B true TW349264B (en) | 1999-01-01 |
Family
ID=20403437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW086108310A TW349264B (en) | 1996-07-19 | 1997-06-16 | Method and device for continuous-time filtering |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0913029A1 (en) |
JP (1) | JP2000514980A (en) |
KR (1) | KR20000065251A (en) |
CN (1) | CN1108658C (en) |
AU (1) | AU3563797A (en) |
CA (1) | CA2260915A1 (en) |
HK (1) | HK1021595A1 (en) |
SE (1) | SE508697C2 (en) |
TW (1) | TW349264B (en) |
WO (1) | WO1998004038A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011004512A1 (en) * | 2009-07-08 | 2011-01-13 | パナソニック株式会社 | Filter circuit and optical disc device provided with same |
US8502597B2 (en) * | 2009-10-21 | 2013-08-06 | Qualcomm, Incorporated | Low-pass filter design |
US20140010783A1 (en) | 2012-07-06 | 2014-01-09 | Hoffmann-La Roche Inc. | Antiviral compounds |
KR20150109451A (en) | 2013-01-23 | 2015-10-01 | 에프. 호프만-라 로슈 아게 | Antiviral triazole derivatives |
RU2015136256A (en) | 2013-03-05 | 2017-04-10 | Ф. Хоффманн-Ля Рош Аг | ANTI-VIRAL COMPOUNDS |
CN104679095A (en) * | 2015-02-15 | 2015-06-03 | 格科微电子(上海)有限公司 | Current source, current source array, read-out circuit, control method of read-out circuit and amplification circuit |
US11296678B1 (en) * | 2020-12-29 | 2022-04-05 | Qualcomm Incorporated | Complementary current-mode biquad with high linearity |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4839542A (en) * | 1984-08-21 | 1989-06-13 | General Datacomm Industries, Inc. | Active transconductance filter device |
US4686487A (en) * | 1986-07-28 | 1987-08-11 | Commodore Business Machines, Inc. | Current mirror amplifier |
EP0600141B1 (en) * | 1992-10-30 | 1997-03-05 | SGS-THOMSON MICROELECTRONICS S.p.A. | Transconductor stage |
WO1995006977A1 (en) * | 1993-09-02 | 1995-03-09 | National Semiconductor Corporation | Active impedance termination |
-
1996
- 1996-07-19 SE SE9602824A patent/SE508697C2/en not_active IP Right Cessation
-
1997
- 1997-06-16 TW TW086108310A patent/TW349264B/en not_active IP Right Cessation
- 1997-06-27 CA CA002260915A patent/CA2260915A1/en not_active Abandoned
- 1997-06-27 AU AU35637/97A patent/AU3563797A/en not_active Abandoned
- 1997-06-27 KR KR1019980710778A patent/KR20000065251A/en not_active Application Discontinuation
- 1997-06-27 WO PCT/SE1997/001169 patent/WO1998004038A1/en not_active Application Discontinuation
- 1997-06-27 CN CN97196552A patent/CN1108658C/en not_active Expired - Fee Related
- 1997-06-27 EP EP97932096A patent/EP0913029A1/en not_active Withdrawn
- 1997-06-27 JP JP10506853A patent/JP2000514980A/en active Pending
-
2000
- 2000-01-22 HK HK00100431A patent/HK1021595A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2000514980A (en) | 2000-11-07 |
WO1998004038A1 (en) | 1998-01-29 |
EP0913029A1 (en) | 1999-05-06 |
HK1021595A1 (en) | 2000-06-16 |
SE9602824L (en) | 1998-01-20 |
CN1225759A (en) | 1999-08-11 |
SE9602824D0 (en) | 1996-07-19 |
SE508697C2 (en) | 1998-10-26 |
KR20000065251A (en) | 2000-11-06 |
AU3563797A (en) | 1998-02-10 |
CN1108658C (en) | 2003-05-14 |
CA2260915A1 (en) | 1998-01-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Lee et al. | A continuous-time current-mode integrator | |
US4331894A (en) | Switched-capacitor interolation filter | |
PL312845A1 (en) | Noise reducing method | |
TW349264B (en) | Method and device for continuous-time filtering | |
AU6538900A (en) | Method and circuit for automatically tuning filter circuits over process, voltage, and temperature | |
WO2002023717A3 (en) | Linear buffer | |
JP2000101356A (en) | High frequency power amplifier circuit | |
NL7601978A (en) | METHOD OF FILTERING ANALOGUE SIGNALS BY TRANSFER OF ELECTRICAL CHARGES IN SEMI-CONDUCTOR MATERIAL, AND FILTER FOR USING THIS METHOD. | |
DE69109509D1 (en) | Sintered body made of silicon nitride and process for its production. | |
GB2298982B (en) | Controllable filter arrangement | |
DE69131244D1 (en) | Dynamic voltage integration method and circuits for performing and using the same | |
CN102710226B (en) | Power amplifying device | |
JPS5516542A (en) | Signal processing circuit | |
JPS5717220A (en) | Switched capacitor type filter device | |
Takagi et al. | A canonical continuous-time MOSFET-capacitor filter with high linearity | |
FI900803A (en) | KOPPLINGSANORDNING FOER FOERENING AV RF-FOERSTAERKARE OCH DRIFTSPAENNINGSFILTER. | |
Behr et al. | Nonlinearities of capacitors realized by MOSFET gates | |
Haigh et al. | High frequency switched capacitor filters for CMOS technology | |
JPS57101404A (en) | Compensation circuit for nonlinear distortion | |
JPS5494827A (en) | Adjusting circuit for video quality | |
EP0468630A3 (en) | Method of increasing the breakdown voltage of a mos transistor without changing the fabrication process | |
SU1202024A1 (en) | Current source | |
Manetti et al. | A fully programmable structure for continuous-time MOS filters | |
JPH01298808A (en) | Filter circuit | |
Zhi-Xiao | A new independently adjustable filter using the operational amplifier pole |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |