JPH06500879A - 温度に依存しないリニア対エクスポーネンシャル変換器 - Google Patents
温度に依存しないリニア対エクスポーネンシャル変換器Info
- Publication number
- JPH06500879A JPH06500879A JP5500855A JP50085593A JPH06500879A JP H06500879 A JPH06500879 A JP H06500879A JP 5500855 A JP5500855 A JP 5500855A JP 50085593 A JP50085593 A JP 50085593A JP H06500879 A JPH06500879 A JP H06500879A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- temperature
- circuit
- current
- line
- 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
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)
Abstract
Description
Claims (10)
- 1.入力信号に指数関数的に関係する温度に依存しない信号を発生するための回 路であって、該回路は、前記入力信号を所望の温度依存性を有する温度依存信号 に変換するための手段、そして 前記変換手段によって発生される温度依存信号を該温度依存信号の印加に応じて 増幅するための指数乗算器を形成する手段であって、前記乗算手段は前記変換手 段によって発生される温度依存信号の温度依存性に対応し、かつ該温度依存性と 逆の、温度依存性を有し、それによって形成された増幅信号が前記入力信号に指 数関数的に関係する温度に依存しない信号を形成するもの、 を具備する入力信号に指数関数的に関係する温度に依存しない信号を発生するた めの回路。
- 2.前記変換手段により形成される温度依存信号は温度に正比例する、請求の範 囲第1項に記載の回路。
- 3.前記変換手段は増幅回路を具備する、請求の範囲第1項の回路。
- 4.前記指数乗算器を形成する手段は入力および出力を有するトランジスタ回路 を具備し、該トランジスタ回路はその入力に印加された入力信号に指数関数的に 関係する出力信号を出力に発生する、請求の範囲第1項に記載の回路。
- 5.前記トランジスタ回路はコレクタ電極、ベース電極およびエミッタ電極を有 する少なくとも1つのバイポーラ接合トランジスタを含み、前記コレクタ電極に 発生される電流は前記バイポーラ接合トランジスタの、それぞれ、ベースおよび エミッタ電極の間の電位差に指数関数的に関係する、請求の範囲第4項に記載の 回路。
- 6.前記少なくとも1つのバイポーラ接合トランジスタのコレクタの電流はね Ic=Isate(VBEq/kT) によって規定され、この場合、 Icは前記少なくとも1つのバイポーラ接合トランジスタのコレクタの電流であ り、 Isatは前記少なくとも1つのバイポーラ接合トランジスタの飽和電流特性で あり、 VBEは前記バイポーラ接合トランジスタの、それぞれ、ベースおよびエミッタ 電極の間の電位差であり、qは電子の電荷の値であり、 kはボルツマン定数であり、そして Tは絶対温度で計った温度である、 請求の範囲第5項に記載の回路。
- 7.前記変換手段により発生される温度依存信号は前記バイポーラ接合トランジ スタのベース電極に印加される、請求の範囲第6項に記載の回路。
- 8.入力信号を温度依存信号に変換する前記手段はさらに該入力信号を該入力信 号の値に応じて変化する電流レベルを有する信号に変換する手段を具備し、かつ それにより形成された前記信号は前記所望の温度依存性を有する前記温度依存信 号に変換される、請求の範囲第7項に記載の回路。
- 9.前記入力信号を前記入力信号の値に応じて変化する電流レベルを有する信号 に変換するための前記手段は前記入力信号を電流信号に変換するための電圧−電 流コンバータを具備する、請求の範囲第8項に記載の回路。
- 10.前記電圧−電流コンバータにより形成される電流信号は電流増幅器に供給 され、該電流増幅器はそこに供給された電流信号を所望の温度依存性を有する温 度依存信号に変換する、請求の範囲第9項に記載の回路。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/709,739 US5200655A (en) | 1991-06-03 | 1991-06-03 | Temperature-independent exponential converter |
US709,739 | 1991-06-03 | ||
PCT/US1992/003766 WO1992022877A1 (en) | 1991-06-03 | 1992-05-08 | Temperature-independent linear-to-exponential converter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06500879A true JPH06500879A (ja) | 1994-01-27 |
JP3253616B2 JP3253616B2 (ja) | 2002-02-04 |
Family
ID=24851140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50085593A Expired - Lifetime JP3253616B2 (ja) | 1991-06-03 | 1992-05-08 | 温度に依存しないリニア対エクスポーネンシャル変換器 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5200655A (ja) |
JP (1) | JP3253616B2 (ja) |
CA (1) | CA2087522C (ja) |
DE (2) | DE4291894T1 (ja) |
GB (1) | GB2261756B (ja) |
WO (1) | WO1992022877A1 (ja) |
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 |
US4604532A (en) * | 1983-01-03 | 1986-08-05 | Analog Devices, Incorporated | Temperature compensated logarithmic circuit |
CA1203628A (en) * | 1983-01-03 | 1986-04-22 | Barrie Gilbert | 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 WO PCT/US1992/003766 patent/WO1992022877A1/en active Application Filing
- 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 JP JP50085593A patent/JP3253616B2/ja not_active Expired - Lifetime
- 1992-05-08 GB GB9301644A patent/GB2261756B/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB2261756A (en) | 1993-05-26 |
CA2087522C (en) | 1996-10-08 |
DE4291894T1 (ja) | 1993-06-03 |
WO1992022877A1 (en) | 1992-12-23 |
JP3253616B2 (ja) | 2002-02-04 |
GB2261756B (en) | 1995-05-17 |
US5200655A (en) | 1993-04-06 |
DE4291894C2 (de) | 1998-05-28 |
GB9301644D0 (en) | 1993-03-24 |
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