JPS558104A - Analog-digital converting device - Google Patents

Analog-digital converting device

Info

Publication number
JPS558104A
JPS558104A JP7983378A JP7983378A JPS558104A JP S558104 A JPS558104 A JP S558104A JP 7983378 A JP7983378 A JP 7983378A JP 7983378 A JP7983378 A JP 7983378A JP S558104 A JPS558104 A JP S558104A
Authority
JP
Japan
Prior art keywords
period
voltage
integrating
integrator
output level
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
JP7983378A
Other languages
Japanese (ja)
Other versions
JPS581568B2 (en
Inventor
Hiroshi Aihara
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 JP7983378A priority Critical patent/JPS581568B2/en
Publication of JPS558104A publication Critical patent/JPS558104A/en
Publication of JPS581568B2 publication Critical patent/JPS581568B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To realize a high-accuracy and high-speed conversion through a simple circuit constitution for the triple integrating converter by finishing the 2nd integrating period in synchronization with the clock pulse and at the same time varying the output level of the integrator.
CONSTITUTION: Input voltage Ex is integrated through the integrator comprising differential amplifier circuit A, capacitor C and resistance R1 in the 1st integrating period T1 and by the command of controller K. And 1st reference voltage +Er featuring the opposite polarity to Ex is integrated in the 2nd integrating period T2. Then the integration is finished in synchronization with clock pulse b after the output level of the integrator passed through the reference level. In the 3rd integrating period T3, voltage +Er is divided, and then the voltage of, for example, 1/10 is applied to circuit a from resistance R4 in the form of the 2nd reference voltage to carry out the integration until the output level reaches the reference level. The clock pulses are counted at the lower 2nd digit of counter N in the lapse of the period set according to voltage E0 at the start of period T2 and also at the lowest digit in period T3 each, thus obtaining the digital quantity corresponding to input Ex.
COPYRIGHT: (C)1980,JPO&Japio
JP7983378A 1978-07-03 1978-07-03 Analog-to-digital converter Expired JPS581568B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7983378A JPS581568B2 (en) 1978-07-03 1978-07-03 Analog-to-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7983378A JPS581568B2 (en) 1978-07-03 1978-07-03 Analog-to-digital converter

Publications (2)

Publication Number Publication Date
JPS558104A true JPS558104A (en) 1980-01-21
JPS581568B2 JPS581568B2 (en) 1983-01-12

Family

ID=13701202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7983378A Expired JPS581568B2 (en) 1978-07-03 1978-07-03 Analog-to-digital converter

Country Status (1)

Country Link
JP (1) JPS581568B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005348324A (en) * 2004-06-07 2005-12-15 Canon Inc Imaging apparatus and imaging system
JP2005348325A (en) * 2004-06-07 2005-12-15 Canon Inc Imaging apparatus and imaging system
WO2005122556A1 (en) * 2004-06-07 2005-12-22 Canon Kabushiki Kaisha Image pickup device and image pickup system
JP2008154292A (en) * 2008-03-17 2008-07-03 Canon Inc Imaging apparatus and imaging system
JP2008154291A (en) * 2008-03-17 2008-07-03 Canon Inc Imaging apparatus and imaging system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005348324A (en) * 2004-06-07 2005-12-15 Canon Inc Imaging apparatus and imaging system
JP2005348325A (en) * 2004-06-07 2005-12-15 Canon Inc Imaging apparatus and imaging system
WO2005122556A1 (en) * 2004-06-07 2005-12-22 Canon Kabushiki Kaisha Image pickup device and image pickup system
US7633539B2 (en) 2004-06-07 2009-12-15 Canon Kabushiki Kaisha Image pickup device with analog-to-digital converter
US8289426B2 (en) 2004-06-07 2012-10-16 Canon Kabushiki Kaisha Image pickup device and image pickup system
JP2008154292A (en) * 2008-03-17 2008-07-03 Canon Inc Imaging apparatus and imaging system
JP2008154291A (en) * 2008-03-17 2008-07-03 Canon Inc Imaging apparatus and imaging system

Also Published As

Publication number Publication date
JPS581568B2 (en) 1983-01-12

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