DE69708516D1 - Bipolare npn-schaltungstopographie für abstimmbare transkonduktanzzelle und positive stromquelle - Google Patents
Bipolare npn-schaltungstopographie für abstimmbare transkonduktanzzelle und positive stromquelleInfo
- Publication number
- DE69708516D1 DE69708516D1 DE69708516T DE69708516T DE69708516D1 DE 69708516 D1 DE69708516 D1 DE 69708516D1 DE 69708516 T DE69708516 T DE 69708516T DE 69708516 T DE69708516 T DE 69708516T DE 69708516 D1 DE69708516 D1 DE 69708516D1
- Authority
- DE
- Germany
- Prior art keywords
- transconductive
- topography
- tunable
- cell
- power source
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
- H03H11/0472—Current or voltage controlled filters
-
- 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
- H03H11/0444—Simulation of ladder networks
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/588,665 US5726600A (en) | 1996-01-17 | 1996-01-17 | NPN bipolar circuit topology for a tunable transconductance cell and positive current source |
PCT/US1997/000624 WO1997026706A1 (en) | 1996-01-17 | 1997-01-17 | Npn bipolar circuit topology for a tunable transconductance cell and positive current source |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69708516D1 true DE69708516D1 (de) | 2002-01-10 |
DE69708516T2 DE69708516T2 (de) | 2002-07-11 |
Family
ID=24354790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69708516T Expired - Fee Related DE69708516T2 (de) | 1996-01-17 | 1997-01-17 | Bipolare npn-schaltungstopographie für abstimmbare transkonduktanzzelle und positive stromquelle |
Country Status (6)
Country | Link |
---|---|
US (2) | US5726600A (de) |
EP (1) | EP0815643B1 (de) |
JP (1) | JPH10504171A (de) |
CA (1) | CA2212492C (de) |
DE (1) | DE69708516T2 (de) |
WO (1) | WO1997026706A1 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5953379A (en) * | 1996-02-23 | 1999-09-14 | Harris Corporation | Current-controlled carrier tracking filter for improved spurious signal suppression |
EP1014573B1 (de) | 1998-12-17 | 2004-07-14 | STMicroelectronics S.r.l. | Tiefpassfilterstruktur mit analoger Entzerrung |
US6310512B1 (en) * | 1999-11-22 | 2001-10-30 | Cardiac Pacemakers, Inc. | Integrated self-adjustable continuous time band pass filter based upon Gm cell with bipolar transistors |
US6172566B1 (en) * | 1999-02-17 | 2001-01-09 | Kabushiki Kaisha Toshiba | Low noise amplifier |
US6329865B1 (en) | 1999-03-18 | 2001-12-11 | Maxim Integrated Products, Inc. | Linearized transconductance cell |
WO2001026218A1 (en) * | 1999-10-06 | 2001-04-12 | Tripath Technology Inc. | Programmable gain feedback amplifier and method for maintaining constant phase |
US20020109552A1 (en) * | 2000-06-02 | 2002-08-15 | Tran Duke T. | System and method of tuning a voltage controlled oscillator |
KR100869433B1 (ko) * | 2001-01-18 | 2008-11-21 | 엔엑스피 비 브이 | 전자 필터 회로 및 이 회로를 포함하는 반도체 칩 |
US6556078B2 (en) * | 2001-04-30 | 2003-04-29 | Em Micoelectronics-Us, Inc | Integrated low-corner frequency high pass filter circuit |
US7525346B2 (en) * | 2002-07-11 | 2009-04-28 | Mindspeed Technologies, Inc. | Driver circuits and methods |
US6600373B1 (en) | 2002-07-31 | 2003-07-29 | Agere Systems, Inc. | Method and circuit for tuning a transconductance amplifier |
US7180369B1 (en) | 2003-05-15 | 2007-02-20 | Marvell International Ltd. | Baseband filter start-up circuit |
TWI283512B (en) * | 2004-07-08 | 2007-07-01 | Via Tech Inc | Transconductance filtering circuit |
US7068104B2 (en) * | 2004-07-08 | 2006-06-27 | Amalfi Semiconductor, Inc. | Power amplifier utilizing high breakdown voltage circuit topology |
JP2006311419A (ja) * | 2005-05-02 | 2006-11-09 | Nec Electronics Corp | 信号出力回路 |
US7348911B2 (en) * | 2006-08-08 | 2008-03-25 | Atmel Corporation | Common mode management between a current-steering DAC and transconductance filter in a transmission system |
US8760144B2 (en) * | 2010-06-28 | 2014-06-24 | Wuxi Vimicro Corporation | Multiple-input comparator and power converter |
US8730690B2 (en) * | 2010-11-30 | 2014-05-20 | General Electric Company | Systems and apparatus for reducing electromagnetic interference and methods of assembling the same |
US8552788B2 (en) | 2011-09-15 | 2013-10-08 | Analog Devices, Inc. | Apparatus and methods for adaptive common-mode level shifting |
US8432222B2 (en) * | 2011-09-15 | 2013-04-30 | Analog Devices, Inc. | Apparatus and methods for electronic amplification |
US9748911B2 (en) * | 2016-01-08 | 2017-08-29 | Elite Semiconductor Memory Technology Inc. | Variable gain amplifying circuit |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4857928A (en) * | 1988-01-28 | 1989-08-15 | Motorola, Inc. | Method and arrangement for a sigma delta converter for bandpass signals |
US5157350A (en) * | 1991-10-31 | 1992-10-20 | Harvey Rubens | Analog multipliers |
US5315231A (en) * | 1992-11-16 | 1994-05-24 | Hughes Aircraft Company | Symmetrical bipolar bias current source with high power supply rejection ratio (PSRR) |
US5371475A (en) * | 1993-06-03 | 1994-12-06 | Northern Telecom Limited | Low noise oscillators and tracking filters |
US5491447A (en) * | 1994-05-13 | 1996-02-13 | International Business Machines Corporation | Operational transconductance amplifier with independent transconductance and common mode feedback control |
US5614864A (en) * | 1995-09-29 | 1997-03-25 | Rockwell Science Center, Inc. | Single-ended to differential converter with relaxed common-mode input requirements |
-
1996
- 1996-01-17 US US08/588,665 patent/US5726600A/en not_active Expired - Lifetime
-
1997
- 1997-01-17 JP JP9526143A patent/JPH10504171A/ja active Pending
- 1997-01-17 CA CA002212492A patent/CA2212492C/en not_active Expired - Fee Related
- 1997-01-17 EP EP97904769A patent/EP0815643B1/de not_active Expired - Lifetime
- 1997-01-17 WO PCT/US1997/000624 patent/WO1997026706A1/en active IP Right Grant
- 1997-01-17 DE DE69708516T patent/DE69708516T2/de not_active Expired - Fee Related
- 1997-05-23 US US08/862,501 patent/US5812020A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2212492C (en) | 2000-10-31 |
CA2212492A1 (en) | 1997-07-24 |
US5812020A (en) | 1998-09-22 |
WO1997026706A1 (en) | 1997-07-24 |
DE69708516T2 (de) | 2002-07-11 |
EP0815643A1 (de) | 1998-01-07 |
EP0815643B1 (de) | 2001-11-28 |
JPH10504171A (ja) | 1998-04-14 |
US5726600A (en) | 1998-03-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |