JPS5773518A - Voltage-controlling oscillator circuit - Google Patents
Voltage-controlling oscillator circuitInfo
- Publication number
- JPS5773518A JPS5773518A JP55148151A JP14815180A JPS5773518A JP S5773518 A JPS5773518 A JP S5773518A JP 55148151 A JP55148151 A JP 55148151A JP 14815180 A JP14815180 A JP 14815180A JP S5773518 A JPS5773518 A JP S5773518A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- grounded
- capacitor
- mos
- gate
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/353—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of field-effect transistors with internal or external positive feedback
- H03K3/354—Astable circuits
Abstract
PURPOSE:To prevent the gate destruction due to latch-up, by constituting two capacitors connected to input side of FFs for a voltage-controlled oscillation circuit of C-MOS using a single power supply and eliminating the production of a negative potential. CONSTITUTION:In a voltage-controlled oscillation circuit of C-MOS constitution, two capacitors 11a, 11b are used and the connecting point is grounded, they are given with a voltage control current source and ground alternately for oscillation, and the oscillation frequency is controlled with a current value. When an output signal (e) of an FF8 changes from L to H and an FET3 turns on, one end A of the capacitor 11a is grounded, but since another end is grounded, the potential at one end B of the capacitor 11b is not negative. Even if an FET5 turns on, one end A of the capacitor 11a is not at negative potential. Thus, no latch-up is caused to a C-MOS gate, the destruction of the gate can be avoided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55148151A JPS5773518A (en) | 1980-10-24 | 1980-10-24 | Voltage-controlling oscillator circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55148151A JPS5773518A (en) | 1980-10-24 | 1980-10-24 | Voltage-controlling oscillator circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5773518A true JPS5773518A (en) | 1982-05-08 |
Family
ID=15446399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55148151A Pending JPS5773518A (en) | 1980-10-24 | 1980-10-24 | Voltage-controlling oscillator circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5773518A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58210717A (en) * | 1982-05-31 | 1983-12-08 | Nec Corp | Voltage controlled oscillator circuit |
JPS5962215A (en) * | 1982-10-01 | 1984-04-09 | Hitachi Ltd | Voltage controlled oscillating circuit |
JPS61166217A (en) * | 1985-01-18 | 1986-07-26 | Matsushita Electric Ind Co Ltd | Voltage controlled oscillator |
JPS61184981A (en) * | 1985-02-12 | 1986-08-18 | Matsushita Electric Ind Co Ltd | Oscillator for clock of controller ic |
-
1980
- 1980-10-24 JP JP55148151A patent/JPS5773518A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58210717A (en) * | 1982-05-31 | 1983-12-08 | Nec Corp | Voltage controlled oscillator circuit |
JPS5962215A (en) * | 1982-10-01 | 1984-04-09 | Hitachi Ltd | Voltage controlled oscillating circuit |
JPS61166217A (en) * | 1985-01-18 | 1986-07-26 | Matsushita Electric Ind Co Ltd | Voltage controlled oscillator |
JPS61184981A (en) * | 1985-02-12 | 1986-08-18 | Matsushita Electric Ind Co Ltd | Oscillator for clock of controller ic |
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