JPS5773518A - Voltage-controlling oscillator circuit - Google Patents

Voltage-controlling oscillator circuit

Info

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
Application number
JP55148151A
Other languages
Japanese (ja)
Inventor
Yoshinobu Nakanishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP55148151A priority Critical patent/JPS5773518A/en
Publication of JPS5773518A publication Critical patent/JPS5773518A/en
Pending legal-status Critical Current

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.
JP55148151A 1980-10-24 1980-10-24 Voltage-controlling oscillator circuit Pending JPS5773518A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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