CA2274529A1 - High dynamic range variable gain amplifier - Google Patents
High dynamic range variable gain amplifier Download PDFInfo
- Publication number
- CA2274529A1 CA2274529A1 CA002274529A CA2274529A CA2274529A1 CA 2274529 A1 CA2274529 A1 CA 2274529A1 CA 002274529 A CA002274529 A CA 002274529A CA 2274529 A CA2274529 A CA 2274529A CA 2274529 A1 CA2274529 A1 CA 2274529A1
- Authority
- CA
- Canada
- Prior art keywords
- amplifier
- variable gain
- dynamic range
- high dynamic
- gain amplifier
- 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.)
- Granted
Links
- 230000007850 degeneration Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
- H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier in emitter-coupled or cascode amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Amplifiers (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
A multi-stage low power, high dynamic range variable gain amplifier (100) comprises an input stage (120) cascaded with one or more current amplifier stages (160A, 160B) whereby the gain of each stage (120) may be independently controlled. The input stage (120) may be comprised of a variable transconductance amplifier (227) using variable emitter degeneration. The current amplifier (160A, 160B) may be comprised of a differential Darlington amplifier (510) coupled to a differential cascode amplifier (520). The transconductance amplifier (227) converts an input voltage signal to a current signal. The variable gain amplifier (100) is designed for efficient low power operation.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/789,108 US5880631A (en) | 1996-02-28 | 1997-01-27 | High dynamic range variable gain amplifier |
US789,108 | 1997-01-27 | ||
PCT/US1997/023657 WO1998033272A1 (en) | 1997-01-27 | 1997-12-19 | High dynamic range variable gain amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2274529A1 true CA2274529A1 (en) | 1998-07-30 |
CA2274529C CA2274529C (en) | 2004-07-27 |
Family
ID=25146617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002274529A Expired - Fee Related CA2274529C (en) | 1997-01-27 | 1997-12-19 | High dynamic range variable gain amplifier |
Country Status (9)
Country | Link |
---|---|
JP (4) | JP4135988B2 (en) |
KR (2) | KR100572187B1 (en) |
CN (1) | CN1124680C (en) |
AU (1) | AU732076B2 (en) |
BR (1) | BR9714291A (en) |
CA (1) | CA2274529C (en) |
HK (1) | HK1023861A1 (en) |
RU (1) | RU2209504C2 (en) |
WO (1) | WO1998033272A1 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2357913A (en) * | 1999-12-24 | 2001-07-04 | Ericsson Telefon Ab L M | Conditioning a gain control signal so that an output is dB linear |
CN1741375B (en) * | 2004-08-26 | 2010-10-27 | 瑞昱半导体股份有限公司 | Amplified circuit capable of dynamic regulating supply voltage |
EP1715579B1 (en) * | 2005-04-19 | 2010-03-10 | Alcatel Lucent | Analogue multiplier |
US7397306B2 (en) * | 2005-11-02 | 2008-07-08 | Marvell World Trade Ltd. | High-bandwidth high-gain amplifier |
US20090102559A1 (en) | 2005-11-23 | 2009-04-23 | Nxp B.V. | Monotonic variable gain amplifier and an automatic gain control circuit |
CN101350605B (en) * | 2008-09-12 | 2011-09-28 | 东南大学 | Improved bipolar type variable gain amplifier with minimum gain control |
US7944311B1 (en) * | 2009-12-17 | 2011-05-17 | Samsung Electro-Mechanics Company, Ltd. | Feedback biasing for cascode amplifiers |
EP2472723B1 (en) * | 2011-01-04 | 2015-12-16 | ams AG | Amplifier with non-linear current mirror |
CN103051298B (en) * | 2011-10-17 | 2016-07-06 | 中国科学院微电子研究所 | Programmable Gain Amplifier Circuit and programmable gain amplifier |
US9071136B2 (en) * | 2012-03-30 | 2015-06-30 | Qualcomm Incorporated | System and method for suppression of peaking in an external LC filter of a buck regulator |
RU2534972C1 (en) * | 2013-04-12 | 2014-12-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") | Broadband non-inverting amplifier with low non-linear noise and harmonic distortion |
RU2519348C1 (en) * | 2013-05-14 | 2014-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") | Controlled amplifier and analogue signal mixer based on darlington differential stage |
CN103647532A (en) * | 2013-11-26 | 2014-03-19 | 苏州贝克微电子有限公司 | Low-voltage folding-type current signal modulator |
CN105353295A (en) * | 2015-12-01 | 2016-02-24 | 无锡比迅科技有限公司 | Operation amplifier gain measurement circuit |
RU2614345C1 (en) * | 2015-12-21 | 2017-03-24 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Поволжский государственный технологический университет" | Method of exapanding dynamic range in radio systems |
US9735738B2 (en) * | 2016-01-06 | 2017-08-15 | Analog Devices Global | Low-voltage low-power variable gain amplifier |
CN110289822A (en) * | 2019-06-27 | 2019-09-27 | 电子科技大学 | A kind of broadband Larger Dynamic auto-gain circuit |
RU2771479C1 (en) * | 2021-05-12 | 2022-05-04 | Общество с ограниченной ответственностью "ТРИУМФ АУДИО" | Symmetric feedback amplifier |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2937316B2 (en) * | 1987-08-28 | 1999-08-23 | 株式会社東芝 | FM modulator |
JPH077891B2 (en) * | 1988-01-09 | 1995-01-30 | ローム株式会社 | Electronic volume circuit |
JPH0281505A (en) * | 1988-09-19 | 1990-03-22 | Hitachi Ltd | Variable gain amplifier |
US5157350A (en) * | 1991-10-31 | 1992-10-20 | Harvey Rubens | Analog multipliers |
JPH05218764A (en) * | 1992-02-03 | 1993-08-27 | Hitachi Ltd | Electronic volume |
DE69229731T2 (en) * | 1992-09-16 | 1999-12-23 | Stmicroelectronics S.R.L., Agrate Brianza | Transconductance differential amplifier dynamically controlled by the input signal |
DE69313624T2 (en) * | 1993-06-30 | 1998-04-02 | Sgs Thomson Microelectronics | Adjustable amplifier |
US5469115A (en) * | 1994-04-28 | 1995-11-21 | Qualcomm Incorporated | Method and apparatus for automatic gain control in a digital receiver |
JPH08130428A (en) * | 1994-10-28 | 1996-05-21 | Sony Corp | Variable gain amplifier |
-
1997
- 1997-12-19 CA CA002274529A patent/CA2274529C/en not_active Expired - Fee Related
- 1997-12-19 RU RU99118581/09A patent/RU2209504C2/en not_active IP Right Cessation
- 1997-12-19 JP JP53197498A patent/JP4135988B2/en not_active Expired - Fee Related
- 1997-12-19 AU AU57132/98A patent/AU732076B2/en not_active Ceased
- 1997-12-19 KR KR1019997006627A patent/KR100572187B1/en not_active IP Right Cessation
- 1997-12-19 WO PCT/US1997/023657 patent/WO1998033272A1/en not_active Application Discontinuation
- 1997-12-19 CN CN97181532A patent/CN1124680C/en not_active Expired - Fee Related
- 1997-12-19 KR KR1020057022889A patent/KR100654112B1/en not_active IP Right Cessation
- 1997-12-19 BR BR9714291-3A patent/BR9714291A/en not_active IP Right Cessation
-
2000
- 2000-05-12 HK HK00102848A patent/HK1023861A1/en not_active IP Right Cessation
-
2007
- 2007-08-17 JP JP2007212947A patent/JP2008005538A/en not_active Withdrawn
-
2008
- 2008-03-18 JP JP2008069493A patent/JP2008182755A/en active Pending
-
2009
- 2009-10-30 JP JP2009251325A patent/JP2010051011A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2001509345A (en) | 2001-07-10 |
JP4135988B2 (en) | 2008-08-20 |
KR20060002023A (en) | 2006-01-06 |
KR100654112B1 (en) | 2006-12-05 |
CA2274529C (en) | 2004-07-27 |
RU2209504C2 (en) | 2003-07-27 |
CN1245598A (en) | 2000-02-23 |
JP2008182755A (en) | 2008-08-07 |
CN1124680C (en) | 2003-10-15 |
WO1998033272A1 (en) | 1998-07-30 |
JP2008005538A (en) | 2008-01-10 |
AU5713298A (en) | 1998-08-18 |
KR20000070394A (en) | 2000-11-25 |
KR100572187B1 (en) | 2006-04-18 |
BR9714291A (en) | 2000-04-25 |
JP2010051011A (en) | 2010-03-04 |
HK1023861A1 (en) | 2000-09-22 |
AU732076B2 (en) | 2001-04-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20121219 |