JPS55104129A - Analog-digital converter - Google Patents

Analog-digital converter

Info

Publication number
JPS55104129A
JPS55104129A JP1267379A JP1267379A JPS55104129A JP S55104129 A JPS55104129 A JP S55104129A JP 1267379 A JP1267379 A JP 1267379A JP 1267379 A JP1267379 A JP 1267379A JP S55104129 A JPS55104129 A JP S55104129A
Authority
JP
Japan
Prior art keywords
preamplifier
analog
offset voltage
digital converter
integration period
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
JP1267379A
Other languages
Japanese (ja)
Other versions
JPS6126736B2 (en
Inventor
Hironobu Niijima
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 JP1267379A priority Critical patent/JPS55104129A/en
Publication of JPS55104129A publication Critical patent/JPS55104129A/en
Publication of JPS6126736B2 publication Critical patent/JPS6126736B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the analog-digital converter low in cost and high in accuracy, by providing the reference voltage supply means between the preamplifier and the analog integrator and by adding the offset voltage to the reference voltage during the secod integration period.
CONSTITUTION: The selection of the gain of the preamplifier 3 can be without being selected at the first and second integration, by providing the reference voltage supply means 2 with the post stage of the preamplifier 3 and using the preamplifier 3 as the amplifier only for converted analog signal. Thus, the offset voltage outputted by the preamplifier 3 through the first and second integration period can be arranged to a given value. In the second integration period, the offset voltage is fed to the reference voltage and given to the analog integrator 5, and the offset voltage having the same magnitude is given to the first and second integrator through the integration period. Thus, the digital converter not effected with the offset voltage can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP1267379A 1979-02-05 1979-02-05 Analog-digital converter Granted JPS55104129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1267379A JPS55104129A (en) 1979-02-05 1979-02-05 Analog-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1267379A JPS55104129A (en) 1979-02-05 1979-02-05 Analog-digital converter

Publications (2)

Publication Number Publication Date
JPS55104129A true JPS55104129A (en) 1980-08-09
JPS6126736B2 JPS6126736B2 (en) 1986-06-21

Family

ID=11811883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1267379A Granted JPS55104129A (en) 1979-02-05 1979-02-05 Analog-digital converter

Country Status (1)

Country Link
JP (1) JPS55104129A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57171831A (en) * 1981-04-15 1982-10-22 Advantest Corp Voltage time transducer
JPS57171832A (en) * 1981-04-15 1982-10-22 Advantest Corp Double integration analog-to-digital converter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4982262A (en) * 1972-12-13 1974-08-08
JPS524765A (en) * 1975-06-30 1977-01-14 Hewlett Packard Yokogawa Dual slope analoggtoodigital converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4982262A (en) * 1972-12-13 1974-08-08
JPS524765A (en) * 1975-06-30 1977-01-14 Hewlett Packard Yokogawa Dual slope analoggtoodigital converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57171831A (en) * 1981-04-15 1982-10-22 Advantest Corp Voltage time transducer
JPS57171832A (en) * 1981-04-15 1982-10-22 Advantest Corp Double integration analog-to-digital converter

Also Published As

Publication number Publication date
JPS6126736B2 (en) 1986-06-21

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