JPS5550737A - Ad converter of sequential comparison type - Google Patents
Ad converter of sequential comparison typeInfo
- Publication number
- JPS5550737A JPS5550737A JP12263178A JP12263178A JPS5550737A JP S5550737 A JPS5550737 A JP S5550737A JP 12263178 A JP12263178 A JP 12263178A JP 12263178 A JP12263178 A JP 12263178A JP S5550737 A JPS5550737 A JP S5550737A
- Authority
- JP
- Japan
- Prior art keywords
- reference voltage
- output
- circuit
- stage
- register
- 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 enable to realize high speed and high accuracy, by producing the reference voltage in required number of digits every comparison step.
CONSTITUTION: When the first clock pulse CP is fed to the sequential control circuit 3 of register type, the output S1 of the 211 stage of the register "1", and when the first clear pulse CL"0" is absent, the output of the AND circuit 7 is "1" to set the switching element 6. The reference voltage of 211 is produced at the otput of the reference voltage circuit 4 and it is compared with 1 the analog signal input Vin. Next, if Vin is greater than this comparison level, the 211 stage of the register reads in the output of the comparator 1 at the second CP, S1 still remains at "1" and the output S2 at 210 stage is set to "1". While this, since the output of the circuit 7 is momentarily "0" with the second CL, the reference voltage is once cleared. By setting the element 6 corresponding to the 211 and 210, the reference voltage of 211 is newly generated and the reference voltage of 210 is superimposed on it.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12263178A JPS5550737A (en) | 1978-10-06 | 1978-10-06 | Ad converter of sequential comparison type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12263178A JPS5550737A (en) | 1978-10-06 | 1978-10-06 | Ad converter of sequential comparison type |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5550737A true JPS5550737A (en) | 1980-04-12 |
Family
ID=14840742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12263178A Pending JPS5550737A (en) | 1978-10-06 | 1978-10-06 | Ad converter of sequential comparison type |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5550737A (en) |
-
1978
- 1978-10-06 JP JP12263178A patent/JPS5550737A/en active Pending
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