JPS57115025A - Analog-to-digital converter - Google Patents

Analog-to-digital converter

Info

Publication number
JPS57115025A
JPS57115025A JP72781A JP72781A JPS57115025A JP S57115025 A JPS57115025 A JP S57115025A JP 72781 A JP72781 A JP 72781A JP 72781 A JP72781 A JP 72781A JP S57115025 A JPS57115025 A JP S57115025A
Authority
JP
Japan
Prior art keywords
converter
analog
frequency characteristic
input signal
quantized
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
JP72781A
Other languages
Japanese (ja)
Inventor
Kenichi Torii
Toshiyasu Yoshizawa
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 JP72781A priority Critical patent/JPS57115025A/en
Publication of JPS57115025A publication Critical patent/JPS57115025A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To transmit a quantized error voltage to an A/D converter at the post stage uniformly over the entire band, by compensating a frequency characteristic in the process generating a quantized analog voltage through a D/A converter from the prestage A/D converter. CONSTITUTION:An input signal applied to an input terminal 1 is roughly quantized at a prestage A/D converter 3, enters a coding circuit 7, becomes an analog signal through a D/A converter 4, the difference between an input signal and a signal delaying the input signal with an analog delay circuit 9 is picked up, fine quantization is made at a post atage A/D converter 6 and enters a coding circuit 7 and a digital output is picked up from a terminal 8. A compensation circuit 10 having a frequency characteristic to increase the gain at high frequency is inserted between the D/A converter 4 and the differential amplifier 5 to make the frequency characteristic almost constant.
JP72781A 1981-01-08 1981-01-08 Analog-to-digital converter Pending JPS57115025A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP72781A JPS57115025A (en) 1981-01-08 1981-01-08 Analog-to-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP72781A JPS57115025A (en) 1981-01-08 1981-01-08 Analog-to-digital converter

Publications (1)

Publication Number Publication Date
JPS57115025A true JPS57115025A (en) 1982-07-17

Family

ID=11481762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP72781A Pending JPS57115025A (en) 1981-01-08 1981-01-08 Analog-to-digital converter

Country Status (1)

Country Link
JP (1) JPS57115025A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282315A2 (en) * 1987-03-12 1988-09-14 THE GENERAL ELECTRIC COMPANY, p.l.c. Analogue to digital converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282315A2 (en) * 1987-03-12 1988-09-14 THE GENERAL ELECTRIC COMPANY, p.l.c. Analogue to digital converter

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