JPS55104129A - Analog-digital converter - Google Patents
Analog-digital converterInfo
- 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
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
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)
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)
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 |
-
1979
- 1979-02-05 JP JP1267379A patent/JPS55104129A/en active Granted
Patent Citations (2)
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)
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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