JPS6478026A - A/d converting circuit - Google Patents

A/d converting circuit

Info

Publication number
JPS6478026A
JPS6478026A JP23541687A JP23541687A JPS6478026A JP S6478026 A JPS6478026 A JP S6478026A JP 23541687 A JP23541687 A JP 23541687A JP 23541687 A JP23541687 A JP 23541687A JP S6478026 A JPS6478026 A JP S6478026A
Authority
JP
Japan
Prior art keywords
order bit
input voltage
voltage
decide
converter
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
JP23541687A
Other languages
Japanese (ja)
Inventor
Kazuhisa Ishiguro
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP23541687A priority Critical patent/JPS6478026A/en
Publication of JPS6478026A publication Critical patent/JPS6478026A/en
Pending legal-status Critical Current

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Landscapes

  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To reduce the maximum number of clocks required for digital conversion by finding only a low-order bit by integration. CONSTITUTION:The titled circuit is constituted of a parallel comparison type A/D converter 15 to decide the high-order bit of the digital change quantity of an input voltage Vx, a circuit 16 to generate a high-order bit voltage corresponding to the size of the input voltage Vx, and an integration type A/D converter 17 to decide the low-order bit. The voltage to be inputted to the integration type A/D converter 17 to decide the low-order bit of a digital quantity is the one in which the high-order bit voltage corresponding to the size of the input voltage is subtracted from an original input voltage Vx, and the input voltage to be integrated is set at a small value. Thereby, it is possible to shorten a time to integrate the input voltage, and also, to shorten a period to integrate a reference voltage accordingly. In such a way, it is possible to reduce the number of clocks required for the digital conversion, and to accelerate conversion speed.
JP23541687A 1987-09-18 1987-09-18 A/d converting circuit Pending JPS6478026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23541687A JPS6478026A (en) 1987-09-18 1987-09-18 A/d converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23541687A JPS6478026A (en) 1987-09-18 1987-09-18 A/d converting circuit

Publications (1)

Publication Number Publication Date
JPS6478026A true JPS6478026A (en) 1989-03-23

Family

ID=16985773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23541687A Pending JPS6478026A (en) 1987-09-18 1987-09-18 A/d converting circuit

Country Status (1)

Country Link
JP (1) JPS6478026A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0226418A (en) * 1988-07-15 1990-01-29 Sanyo Electric Co Ltd Double integral type a/d converting circuit
JPH0226417A (en) * 1988-07-15 1990-01-29 Sanyo Electric Co Ltd A/d converting circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0226418A (en) * 1988-07-15 1990-01-29 Sanyo Electric Co Ltd Double integral type a/d converting circuit
JPH0226417A (en) * 1988-07-15 1990-01-29 Sanyo Electric Co Ltd A/d converting circuit

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