JPS645108A - High speed-high accuracy buffer amplifier - Google Patents

High speed-high accuracy buffer amplifier

Info

Publication number
JPS645108A
JPS645108A JP16045287A JP16045287A JPS645108A JP S645108 A JPS645108 A JP S645108A JP 16045287 A JP16045287 A JP 16045287A JP 16045287 A JP16045287 A JP 16045287A JP S645108 A JPS645108 A JP S645108A
Authority
JP
Japan
Prior art keywords
current
active element
high speed
buffer amplifier
constant
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.)
Pending
Application number
JP16045287A
Other languages
Japanese (ja)
Inventor
Haruyuki Shibazaki
Takayuki Nakatani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Advantest Corp
Original Assignee
Advantest Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Advantest Corp filed Critical Advantest Corp
Priority to JP16045287A priority Critical patent/JPS645108A/en
Publication of JPS645108A publication Critical patent/JPS645108A/en
Pending legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE:To obtain a high speed high accuracy buffer amplifier provided with wide band and low distortion factor in common by keeping an active element forming an emitter follower or a source follower so that the current is nearly made constant independently of the excitation of a signal. CONSTITUTION:A current iL flowing to a load 5 is changed by changing a current icomp of a constant current active element 6 without changing the current of an amplification active element 2 largely. Thus, the mutual conductance gm of the active element 2 is not largely changed and the amplification factor is kept nearly a constant value, then the output impedance Z0 viewed from the load is kept constant, the distortion factor is improved and the accuracy is improved. Since the frequency at which the distortion factor starts being deteriorated is the frequency equal to that of a conventional emitter follower and the practical band is sufficiently wide, the high speed response is attained. Then the high speed and high accuracy buffer amplifier is obtained.
JP16045287A 1987-06-26 1987-06-26 High speed-high accuracy buffer amplifier Pending JPS645108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16045287A JPS645108A (en) 1987-06-26 1987-06-26 High speed-high accuracy buffer amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16045287A JPS645108A (en) 1987-06-26 1987-06-26 High speed-high accuracy buffer amplifier

Publications (1)

Publication Number Publication Date
JPS645108A true JPS645108A (en) 1989-01-10

Family

ID=15715241

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16045287A Pending JPS645108A (en) 1987-06-26 1987-06-26 High speed-high accuracy buffer amplifier

Country Status (1)

Country Link
JP (1) JPS645108A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015076679A (en) * 2013-10-07 2015-04-20 旭化成エレクトロニクス株式会社 Source follower circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015076679A (en) * 2013-10-07 2015-04-20 旭化成エレクトロニクス株式会社 Source follower circuit

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