JPS54160157A - Analog-digital converter - Google Patents
Analog-digital converterInfo
- Publication number
- JPS54160157A JPS54160157A JP6896478A JP6896478A JPS54160157A JP S54160157 A JPS54160157 A JP S54160157A JP 6896478 A JP6896478 A JP 6896478A JP 6896478 A JP6896478 A JP 6896478A JP S54160157 A JPS54160157 A JP S54160157A
- Authority
- JP
- Japan
- Prior art keywords
- input
- integrated
- time
- integrator
- saw
- 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
Links
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE: To ensure an A-D conversion with no overflow of the excessive input by integrating the integrated analog signals after swiching to the saw-tooth wave generator.
CONSTITUTION: The analog input signal is applied to integrator 1 via switch SW1 and then integrated for the prescribed time after reaching reference voltage V2 of comparator 2. Saw-tooth wave generator 7 featuring the opposite polarity to the input signal is actuated by the output of 1st gate 3 simultaneously with opening of SW1, and at the same time switch SW2 is closed via switch driving circuit 6. Thus, the discharging is continued until the output voltage of integrator 1 reaches voltage V2. This discharge time is equivalent to the square root of the integrated time and then counted 5 by the clock pulse via gate 4. Thus, the digital signal proportional to the input square root can be obtained. As a result, the A-D conversion becomes possible over a wide range from small input to large one.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6896478A JPS54160157A (en) | 1978-06-09 | 1978-06-09 | Analog-digital converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6896478A JPS54160157A (en) | 1978-06-09 | 1978-06-09 | Analog-digital converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54160157A true JPS54160157A (en) | 1979-12-18 |
Family
ID=13388862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6896478A Pending JPS54160157A (en) | 1978-06-09 | 1978-06-09 | Analog-digital converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54160157A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0391522A2 (en) * | 1989-04-04 | 1990-10-10 | Analogic Corporation | C.T. data acquisition system |
-
1978
- 1978-06-09 JP JP6896478A patent/JPS54160157A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0391522A2 (en) * | 1989-04-04 | 1990-10-10 | Analogic Corporation | C.T. data acquisition system |
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