JPS54101653A - Switching circuit of double integration analogue digital converter - Google Patents

Switching circuit of double integration analogue digital converter

Info

Publication number
JPS54101653A
JPS54101653A JP874278A JP874278A JPS54101653A JP S54101653 A JPS54101653 A JP S54101653A JP 874278 A JP874278 A JP 874278A JP 874278 A JP874278 A JP 874278A JP S54101653 A JPS54101653 A JP S54101653A
Authority
JP
Japan
Prior art keywords
terminal
signals
resistance
switching circuit
diode
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
JP874278A
Other languages
Japanese (ja)
Inventor
Kazuyuki Arimoto
Susumu Watanabe
Takahiko Tanji
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP874278A priority Critical patent/JPS54101653A/en
Publication of JPS54101653A publication Critical patent/JPS54101653A/en
Pending legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To perform an accurate proportional conversion by constituting a circuit by a switching diode and transistors which are connected to the positive polarity and the negative polarity of the diode respectively and are opened at a charge time and are closed at a discharge time.
CONSTITUTION: This circuit is constituted by power source terminal 11 which gives the threshold voltage prescribed by resistances 12 and 13, signal voltage terminal 14, reference voltage terminal 15, terminal 16 where T1.T2 signals are applied, transistors Tr17 and 18 which are connected to the positive polarity and the negative polarity of diode 19 respectively and have the function to switch the input of operational amplifier 20 to terminal 14 and terminal 15, and comparator 25. When T1.T2 signals are applied to terminal 16, Tr17 and 18 are in a cut-off state at a T1 time, and the signal at terminal 14 is applied to resistance 21, and the level at output end (a) of amplifier 20 starts reduction. After T1 passage, when signals by which Tr17 and 18 becomes an ON-state are applied, resistance 21 is separated from terminal 14, and resistance 21 is connected to terminal 15 by Tr18.
COPYRIGHT: (C)1979,JPO&Japio
JP874278A 1978-01-27 1978-01-27 Switching circuit of double integration analogue digital converter Pending JPS54101653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP874278A JPS54101653A (en) 1978-01-27 1978-01-27 Switching circuit of double integration analogue digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP874278A JPS54101653A (en) 1978-01-27 1978-01-27 Switching circuit of double integration analogue digital converter

Publications (1)

Publication Number Publication Date
JPS54101653A true JPS54101653A (en) 1979-08-10

Family

ID=11701387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP874278A Pending JPS54101653A (en) 1978-01-27 1978-01-27 Switching circuit of double integration analogue digital converter

Country Status (1)

Country Link
JP (1) JPS54101653A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4916369A (en) * 1972-05-19 1974-02-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4916369A (en) * 1972-05-19 1974-02-13

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