JPS55136717A - Analog/digital converter - Google Patents
Analog/digital converterInfo
- Publication number
- JPS55136717A JPS55136717A JP4557379A JP4557379A JPS55136717A JP S55136717 A JPS55136717 A JP S55136717A JP 4557379 A JP4557379 A JP 4557379A JP 4557379 A JP4557379 A JP 4557379A JP S55136717 A JPS55136717 A JP S55136717A
- Authority
- JP
- Japan
- Prior art keywords
- lds
- level
- resistor
- anl
- lcs
- 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
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
- H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To enable accurate and stable A/D conversion, by making agreement the range of output voltage of level comparator with the power supply voltage of the resistor ladder circuit and connecting the output terminals of the comparator and ladder circuit with resistors. CONSTITUTION:The switches 10, 11... of the resistor ladder circuit 1 are ON or OFF in a given sequence with the code produced with the digital signal generation circuit 3, and the output LDS of the circuit 1 is increased. While LDS is lower than the analog input ANL, the output LCS of the level comparator 2 is at the level of -V, -V is fed to the resistor r, and it determines the slope of LDS. When LDS is in excess of ANL, LCS is at high level V, V is fed to the resistor r, LDS is level up to the positive side and increased surely than ANL by that value. Thus, LCS is not fallen under the low level and can keep the high level as it is.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4557379A JPS6011494B2 (en) | 1979-04-13 | 1979-04-13 | Analog/digital converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4557379A JPS6011494B2 (en) | 1979-04-13 | 1979-04-13 | Analog/digital converter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55136717A true JPS55136717A (en) | 1980-10-24 |
JPS6011494B2 JPS6011494B2 (en) | 1985-03-26 |
Family
ID=12723081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4557379A Expired JPS6011494B2 (en) | 1979-04-13 | 1979-04-13 | Analog/digital converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6011494B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01296822A (en) * | 1988-05-25 | 1989-11-30 | Toshiba Corp | Analog-digital converter |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0423184U (en) * | 1990-06-15 | 1992-02-26 |
-
1979
- 1979-04-13 JP JP4557379A patent/JPS6011494B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01296822A (en) * | 1988-05-25 | 1989-11-30 | Toshiba Corp | Analog-digital converter |
Also Published As
Publication number | Publication date |
---|---|
JPS6011494B2 (en) | 1985-03-26 |
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