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JPS57183108A - Differential amplifier - Google Patents

Differential amplifier

Info

Publication number
JPS57183108A
JPS57183108A JP6647881A JP6647881A JPS57183108A JP S57183108 A JPS57183108 A JP S57183108A JP 6647881 A JP6647881 A JP 6647881A JP 6647881 A JP6647881 A JP 6647881A JP S57183108 A JPS57183108 A JP S57183108A
Authority
JP
Japan
Prior art keywords
period
factor
differential amplifier
turned
mosfets
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
Application number
JP6647881A
Other languages
Japanese (ja)
Other versions
JPS6321361B2 (en
Inventor
Eiji Masuda
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6647881A priority Critical patent/JPS57183108A/en
Publication of JPS57183108A publication Critical patent/JPS57183108A/en
Publication of JPS6321361B2 publication Critical patent/JPS6321361B2/ja
Granted legal-status Critical Current

Links

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  • Filters That Use Time-Delay Elements (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE: To increase an amplification degree while the area of a chip is still small, and to improve frequency characteristics of a differential amplifier of MOSFET constitution by performing cascaded amplification of an input signal through a capacitor for holding a voltage.
CONSTITUTION: Input signals IN1 and IN2 are supplied to the gates of MOSFETs Q1 and Q2 through switches SW1 and SW2. Switches SW1∼SW6 are controlled in two separate periods. In the 1st period, the SW1∼SW4 are turned on and the others are turned off, and in the 2nd period, the SW1∼SW4 are turned off and the others are turned on. For example, a differential amplifier consisting of the MOSFETs Q1 and Q2 has an A-fold amplification degree. In the 1st period, the input signals are amplified by a factor A to charge a capacitor. In the 2nd period, the output signal of the 1st period is amplified by the factor A. Namely, the differential amplifier having the maplification factor A operates on cascade basis to amplify the input signal in the 1st period (sampling period) by a factor A2.
COPYRIGHT: (C)1982,JPO&Japio
JP6647881A 1981-05-01 1981-05-01 Differential amplifier Granted JPS57183108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6647881A JPS57183108A (en) 1981-05-01 1981-05-01 Differential amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6647881A JPS57183108A (en) 1981-05-01 1981-05-01 Differential amplifier

Publications (2)

Publication Number Publication Date
JPS57183108A true JPS57183108A (en) 1982-11-11
JPS6321361B2 JPS6321361B2 (en) 1988-05-06

Family

ID=13316921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6647881A Granted JPS57183108A (en) 1981-05-01 1981-05-01 Differential amplifier

Country Status (1)

Country Link
JP (1) JPS57183108A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644291A (en) * 1983-11-08 1987-02-17 Nec Corporation Operational amplifier
JP2008048407A (en) * 2006-08-14 2008-02-28 Hynix Semiconductor Inc Amplifying circuit of semiconductor integrated circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644291A (en) * 1983-11-08 1987-02-17 Nec Corporation Operational amplifier
JP2008048407A (en) * 2006-08-14 2008-02-28 Hynix Semiconductor Inc Amplifying circuit of semiconductor integrated circuit

Also Published As

Publication number Publication date
JPS6321361B2 (en) 1988-05-06

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