DE4291894T1 - - Google Patents
Info
- Publication number
- DE4291894T1 DE4291894T1 DE4291894T DE4291894T DE4291894T1 DE 4291894 T1 DE4291894 T1 DE 4291894T1 DE 4291894 T DE4291894 T DE 4291894T DE 4291894 T DE4291894 T DE 4291894T DE 4291894 T1 DE4291894 T1 DE 4291894T1
- Authority
- DE
- Germany
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Software Systems (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/709,739 US5200655A (en) | 1991-06-03 | 1991-06-03 | Temperature-independent exponential converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4291894T1 true DE4291894T1 (US20090192370A1-20090730-C00001.png) | 1993-06-03 |
Family
ID=24851140
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4291894T Pending DE4291894T1 (US20090192370A1-20090730-C00001.png) | 1991-06-03 | 1992-05-08 | |
| DE4291894A Expired - Lifetime DE4291894C2 (de) | 1991-06-03 | 1992-05-08 | Wandlerschaltkreis zum Umsetzen eines Eingangssignals in ein temperaturunabhängiges Ausgangssignal sowie entsprechender Funkempfänger |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4291894A Expired - Lifetime DE4291894C2 (de) | 1991-06-03 | 1992-05-08 | Wandlerschaltkreis zum Umsetzen eines Eingangssignals in ein temperaturunabhängiges Ausgangssignal sowie entsprechender Funkempfänger |
Country Status (6)
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4124585A1 (de) * | 1991-07-24 | 1993-01-28 | Siemens Ag | Steuerbare schaltungsanordnung |
| MY112702A (en) * | 1992-10-30 | 2001-08-30 | Sony Corp | Reproducing circuit for a magnetic head. |
| EP0613243A1 (en) * | 1993-02-26 | 1994-08-31 | STMicroelectronics S.r.l. | Anti-logarithmic converter with temperature compensation |
| GB2280073B (en) * | 1993-06-30 | 1996-11-27 | Northern Telecom Ltd | Amplifier circuit |
| JP2694767B2 (ja) * | 1993-10-29 | 1997-12-24 | 東光株式会社 | 積分器 |
| US5481218A (en) * | 1994-09-30 | 1996-01-02 | Telefonaktiebolaget Lm Ericsson | Logarithmic converter |
| US5777509A (en) * | 1996-06-25 | 1998-07-07 | Symbios Logic Inc. | Apparatus and method for generating a current with a positive temperature coefficient |
| US6259302B1 (en) * | 1998-10-22 | 2001-07-10 | National Semiconductor Corporation | Gain control signal generator that tracks operating variations due to variations in manufacturing processes and operating conditions by tracking variations in DC biasing |
| US6369618B1 (en) * | 1999-02-12 | 2002-04-09 | Texas Instruments Incorporated | Temperature and process independent exponential voltage-to-current converter circuit |
| EP1089430A3 (en) * | 1999-09-30 | 2004-04-07 | Agilent Technologies, Inc. (a Delaware corporation) | A dB-linear variable gain amplifier |
| US6615027B1 (en) * | 2000-01-21 | 2003-09-02 | Qualcomm Incorporated | Method and circuit for providing interface signals between integrated circuits |
| US6249170B1 (en) * | 2000-04-14 | 2001-06-19 | Motorola, Inc. | Logarithmic gain control circuit and method |
| KR100609683B1 (ko) * | 2003-12-26 | 2006-08-08 | 한국전자통신연구원 | 온도 보상이 가능한 ｃｍｏｓ지수함수 발생기 회로 |
| US7710165B2 (en) * | 2007-09-25 | 2010-05-04 | Integrated Device Technology, Inc. | Voltage-to-current converter |
| US8223900B2 (en) * | 2009-03-02 | 2012-07-17 | Maxim Integrated Products, Inc. | Receiver with mixed-mode automatic gain control |
| US8400218B2 (en) | 2010-11-15 | 2013-03-19 | Qualcomm, Incorporated | Current mode power amplifier providing harmonic distortion suppression |
| TWI509983B (zh) * | 2011-02-01 | 2015-11-21 | Wistron Neweb Corp | 溫度補償裝置及衛星訊號接收系統 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3444362A (en) * | 1964-10-30 | 1969-05-13 | Teledyne Inc | Antilogarithmic function generator |
| US3329836A (en) * | 1965-06-02 | 1967-07-04 | Nexus Res Lab Inc | Temperature compensated logarithmic amplifier |
| US3612902A (en) * | 1968-10-16 | 1971-10-12 | Bell Telephone Labor Inc | Temperature-independent antilogarithm circuit |
| US3790819A (en) * | 1972-03-17 | 1974-02-05 | Perkin Elmer Corp | Log amplifier apparatus |
| JPS5161243A (en) * | 1974-11-25 | 1976-05-27 | Fuji Photo Optical Co Ltd | Taisuzofukuki |
| JPS52139413A (en) * | 1976-05-17 | 1977-11-21 | Matsushita Electric Ind Co Ltd | Sound source device for electronic instrument |
| US4333023A (en) * | 1980-06-16 | 1982-06-01 | Tektronix, Inc. | Temperature-stabilized logarithmic converter |
| CA1203628A (en) * | 1983-01-03 | 1986-04-22 | Barrie Gilbert | Temperature compensated logarithmic circuit |
| US4604532A (en) * | 1983-01-03 | 1986-08-05 | Analog Devices, Incorporated | Temperature compensated logarithmic circuit |
| US4692025A (en) * | 1984-05-30 | 1987-09-08 | Sharp Kabushiki Kaisha | Semiconductor color sensor detection circuit |
| US4786970A (en) * | 1987-08-26 | 1988-11-22 | Eastman Kodak Company | Logarithmic amplifier |
| JPH0671185B2 (ja) * | 1988-07-20 | 1994-09-07 | 三洋電機株式会社 | 対数増幅回路 |
| US5126846A (en) * | 1988-08-08 | 1992-06-30 | Kabushiki Kaisha Toshiba | Non-linear amplifier and non-linear emphasis/deemphasis circuit using the same |
| JPH0671186B2 (ja) * | 1990-01-19 | 1994-09-07 | 株式会社東芝 | 対数増幅回路 |
| US5065053A (en) * | 1990-02-26 | 1991-11-12 | Digital Equipment Corporation Of Canada, Ltd. | Exponential function circuitry |
-
1991
- 1991-06-03 US US07/709,739 patent/US5200655A/en not_active Expired - Lifetime
-
1992
- 1992-05-08 DE DE4291894T patent/DE4291894T1/de active Pending
- 1992-05-08 DE DE4291894A patent/DE4291894C2/de not_active Expired - Lifetime
- 1992-05-08 CA CA002087522A patent/CA2087522C/en not_active Expired - Fee Related
- 1992-05-08 GB GB9301644A patent/GB2261756B/en not_active Expired - Lifetime
- 1992-05-08 JP JP50085593A patent/JP3253616B2/ja not_active Expired - Lifetime
- 1992-05-08 WO PCT/US1992/003766 patent/WO1992022877A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| US5200655A (en) | 1993-04-06 |
| GB2261756B (en) | 1995-05-17 |
| JP3253616B2 (ja) | 2002-02-04 |
| JPH06500879A (ja) | 1994-01-27 |
| DE4291894C2 (de) | 1998-05-28 |
| CA2087522C (en) | 1996-10-08 |
| WO1992022877A1 (en) | 1992-12-23 |
| GB9301644D0 (en) | 1993-03-24 |
| GB2261756A (en) | 1993-05-26 |
