JPS5723322A - High speed analog-to-digital converter - Google Patents

High speed analog-to-digital converter

Info

Publication number
JPS5723322A
JPS5723322A JP9780480A JP9780480A JPS5723322A JP S5723322 A JPS5723322 A JP S5723322A JP 9780480 A JP9780480 A JP 9780480A JP 9780480 A JP9780480 A JP 9780480A JP S5723322 A JPS5723322 A JP S5723322A
Authority
JP
Japan
Prior art keywords
switch
next stage
input signal
output voltage
upper digit
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
JP9780480A
Other languages
Japanese (ja)
Inventor
Hidekazu Yada
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.)
Advantest Corp
Original Assignee
Advantest Corp
Takeda Riken Industries 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 Advantest Corp, Takeda Riken Industries Co Ltd filed Critical Advantest Corp
Priority to JP9780480A priority Critical patent/JPS5723322A/en
Publication of JPS5723322A publication Critical patent/JPS5723322A/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
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/44—Sequential comparisons in series-connected stages with change in value of analogue signal

Landscapes

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

Abstract

PURPOSE:To make a D/A converting part unnecessary and to increase a converting speed, by selecting a reference signal by an output of a comparator for comparing an input signal and plural reference signals, amplifying a difference between the reference signal and the input signal, and outputting it to the next stage, in a parallel comparison A/D converter which has been cascaded to plural stages. CONSTITUTION:Comparators 6a, 6b compare an input signal Ei with reference signals Er, -Er. In case of Ei>Er, an upper digit becomes ''1'', and a controller 7 closes a switch 8b and outputs output voltage of 2(Ei-Er) to the next stage. In case of -Er<Ei<Er, the upper digit becomes ''O'', or -''O'' in accordance with the polarity of the input signal, a switch 8c is closed, and output voltage of 2Ei is outputted to the next stage. In the even of Ei<-Er, the upper digit becomes -''1'', a switch 8a is closed, and output voltage of 2(Ei+Er) is outputted to the next stage. In this regard, in order to correct the offset, a switch 5b and an offsetting memory 9 are provided.
JP9780480A 1980-07-16 1980-07-16 High speed analog-to-digital converter Pending JPS5723322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9780480A JPS5723322A (en) 1980-07-16 1980-07-16 High speed analog-to-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9780480A JPS5723322A (en) 1980-07-16 1980-07-16 High speed analog-to-digital converter

Publications (1)

Publication Number Publication Date
JPS5723322A true JPS5723322A (en) 1982-02-06

Family

ID=14201961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9780480A Pending JPS5723322A (en) 1980-07-16 1980-07-16 High speed analog-to-digital converter

Country Status (1)

Country Link
JP (1) JPS5723322A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186222A (en) * 1982-04-23 1983-10-31 Nec Home Electronics Ltd Analog-digital converting system
US5017920A (en) * 1989-05-05 1991-05-21 Rockwell International Corporation High-speed modified successive approximation analog to digital converter
JPH0583134A (en) * 1990-06-04 1993-04-02 General Electric Co <Ge> Subrange analog/digital converter for correcting digital error
EP0557052A2 (en) * 1992-02-19 1993-08-25 Hewlett-Packard Company Analog to digital converter
WO1996015593A1 (en) * 1994-11-10 1996-05-23 National Semiconductor Corporation Radix 2 architecture and calibration technique for pipelined analog to digital converters

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186222A (en) * 1982-04-23 1983-10-31 Nec Home Electronics Ltd Analog-digital converting system
JPH0153814B2 (en) * 1982-04-23 1989-11-15 Nippon Denki Hoomu Erekutoronikusu Kk
US5017920A (en) * 1989-05-05 1991-05-21 Rockwell International Corporation High-speed modified successive approximation analog to digital converter
JPH0583134A (en) * 1990-06-04 1993-04-02 General Electric Co <Ge> Subrange analog/digital converter for correcting digital error
EP0557052A2 (en) * 1992-02-19 1993-08-25 Hewlett-Packard Company Analog to digital converter
EP0557052A3 (en) * 1992-02-19 1994-10-26 Hewlett Packard Co Analog to digital converter
WO1996015593A1 (en) * 1994-11-10 1996-05-23 National Semiconductor Corporation Radix 2 architecture and calibration technique for pipelined analog to digital converters
US5668549A (en) * 1994-11-10 1997-09-16 National Semiconductor Corporation Radix 2 architecture and calibration technique for pipelined analog to digital converters

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