JPS54158846A - Analog-to-digital converter - Google Patents

Analog-to-digital converter

Info

Publication number
JPS54158846A
JPS54158846A JP6859078A JP6859078A JPS54158846A JP S54158846 A JPS54158846 A JP S54158846A JP 6859078 A JP6859078 A JP 6859078A JP 6859078 A JP6859078 A JP 6859078A JP S54158846 A JPS54158846 A JP S54158846A
Authority
JP
Japan
Prior art keywords
integrator
precision
output
converter
analog
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
JP6859078A
Other languages
Japanese (ja)
Other versions
JPS6221292B2 (en
Inventor
Tsuneo Fujita
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6859078A priority Critical patent/JPS54158846A/en
Publication of JPS54158846A publication Critical patent/JPS54158846A/en
Publication of JPS6221292B2 publication Critical patent/JPS6221292B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To make it possible to constitute an analog-digital converter as a monolithic integrated circuit excellently while removing the phase delay of an integrator output and the conversion error of a comparator output in a short time and with high precision, by providing a calibration period for integrating the 2nd reference voltage.
CONSTITUTION: The phase lag of an output to the step input variation of the integrator is determined only by the gain of the integrator and frequency characteristics of the gain. In the A/D converter, direct-current amplifier 1, resistance R and capacitor C constitute integrating circuit INT, and R is supplied with input voltage VIN and two reference voltages -VR and VR via electronic switches S1 to S3. The A/D converter consists of comparator 2, control circuit 3, up-down counter 4, etc. Further, the precision of the 2nd reference voltage VR can be lowered without influencing the precision of the entire A/D conversion as integration period T3 for the removal of an error.
COPYRIGHT: (C)1979,JPO&Japio
JP6859078A 1978-06-06 1978-06-06 Analog-to-digital converter Granted JPS54158846A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6859078A JPS54158846A (en) 1978-06-06 1978-06-06 Analog-to-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6859078A JPS54158846A (en) 1978-06-06 1978-06-06 Analog-to-digital converter

Publications (2)

Publication Number Publication Date
JPS54158846A true JPS54158846A (en) 1979-12-15
JPS6221292B2 JPS6221292B2 (en) 1987-05-12

Family

ID=13378152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6859078A Granted JPS54158846A (en) 1978-06-06 1978-06-06 Analog-to-digital converter

Country Status (1)

Country Link
JP (1) JPS54158846A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0730662B2 (en) * 1987-12-31 1995-04-10 スワン商事株式会社 Horizontal lifting device using wire rope

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49103560A (en) * 1973-02-05 1974-10-01
JPS5050853A (en) * 1973-07-19 1975-05-07
JPS5148261A (en) * 1974-10-24 1976-04-24 Tokyo Shibaura Electric Co aad henkanki

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49103560A (en) * 1973-02-05 1974-10-01
JPS5050853A (en) * 1973-07-19 1975-05-07
JPS5148261A (en) * 1974-10-24 1976-04-24 Tokyo Shibaura Electric Co aad henkanki

Also Published As

Publication number Publication date
JPS6221292B2 (en) 1987-05-12

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