KR970072705A - Current-controlled oscillator - Google Patents

Current-controlled oscillator Download PDF

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Publication number
KR970072705A
KR970072705A KR1019960010596A KR19960010596A KR970072705A KR 970072705 A KR970072705 A KR 970072705A KR 1019960010596 A KR1019960010596 A KR 1019960010596A KR 19960010596 A KR19960010596 A KR 19960010596A KR 970072705 A KR970072705 A KR 970072705A
Authority
KR
South Korea
Prior art keywords
differential amplifier
current
differential
controlled oscillator
present
Prior art date
Application number
KR1019960010596A
Other languages
Korean (ko)
Inventor
방대성
Original Assignee
문정환
Lg 반도체주식회사
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 문정환, Lg 반도체주식회사 filed Critical 문정환
Priority to KR1019960010596A priority Critical patent/KR970072705A/en
Publication of KR970072705A publication Critical patent/KR970072705A/en

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Abstract

본 발명은 전류제어 발진기(CCO : Current Controlled Oscillator)에 관한 것으로, 특히 전류제어단자로 전류원을 제어하여 차동증폭기의 저항에 흐르는 전류를 변환시켜 그 차동증폭기의 두 출력단에 서로 다른 전위인 고전위와 저전위를 각기 출력하여 발진하도록 한 전류제어발진기에 관한 것이다. 따라서, 본 발명은 전류제어단자가 전류원을 제어하여 차동증폭기의 저항에 흐르는 전류를 변화시켜 그 차동증폭기의 두 출력단에 서로 다른 전위인 고전위 신호 및 저전위 신호를 발생시키고, 이와같이 출력되는 두 신호를 다음단의 차동증폭기에 입력받아 순차로 차동증폭한후 처음단의 차동증폭기에 입력시켜 차동증폭하는것에 의해 발진신호를 발생시키므로, 고주파용 및 저전압용으로 사용되는 클럭발생과 고주파 소오스로 이용되고, 피엘엘 회로의 원칩화를 가능하게 하는 효과가 있다.In particular, the present invention relates to a current controlled oscillator (CCO). More particularly, the present invention relates to a current controlled oscillator (CCO), in which a current source is controlled by a current control terminal to convert a current flowing in a resistance of a differential amplifier, And outputting an electric potential to oscillate the current control oscillator. Therefore, in the present invention, the current control terminal controls the current source to change the current flowing in the resistance of the differential amplifier to generate the high-potential signal and the low-potential signal having different potentials at the two output terminals of the differential amplifier, Are input to the differential amplifier of the next stage and are sequentially amplified by differential amplification, and then input to the differential amplifier of the first stage to perform differential amplification to generate an oscillation signal. Thus, the oscillation signal is used as a clock generation and high frequency source used for high frequency and low voltage , It is possible to make one-chip of the PLL circuit.

Description

전류제어 발진기Current-controlled oscillator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제2도는 본 발명의 전류제어발진기 회로도.Figure 2 is a circuit diagram of a current controlled oscillator of the present invention.

Claims (2)

제어신호에 따라 전류흐름의 제어를 받아 제3차동증폭부의 두 출력 신호를 차동 증폭하여 출력하는 제1차동증폭부와, 상기 제어신호에 따라 전류흐름의 제어를 받아 상기 제1차동증폭부의 두 출력신호를 차동증폭하여 출력하는 제2차동증폭부와, 상기 제어신호에 따라 전류흐름의 제어를 받아 상기 제2차동증폭부의 두 출력신호를 차동 증폭하여 출력하는 제3차동증폭부로 구성하여 된 것을 특징으로 하는 전류제어발진기.A first differential amplifier for receiving the control signal and controlling the current flow to differentially amplify the two output signals of the third differential amplifier and outputting the amplified output signal; And a third differential amplifier for differential amplifying and outputting two output signals of the second differential amplifier under the control of current flow in accordance with the control signal. Current controlled oscillator. 제1항에 있어서, 제1차동증폭부는 전원전압이 저항(R1,R2)을 각기 통해 엔모스 트랜지스터(MN10,MN11)의 드레인에 인가되게 접속함과 아울러 제3차동증폭부의 두 출력신호가 그 엔모스 트랜지스터(MN10,MN11)의 게이트에 각기 인가되게 접속하고, 상기 엔모스 트랜지스터(MN10,MN11)의 소오스는 게이트에 제어신호를 인가받는 엔모스 트랜지스터(MN16)의 드레인에 공통접속한 후 그의 소오스를 접지의 저항(R3)에 접속하여 구성된 것을 특징으로 하는 전류제어발진기.The differential amplifier according to claim 1, wherein the first differential amplifying part comprises: a first differential amplifying part for connecting the power source voltage to the drain of the NMOS transistors MN10 and MN11 via resistors R1 and R2, The sources of the NMOS transistors MN10 and MN11 are commonly connected to the drain of an NMOS transistor MN16 receiving a control signal at the gate thereof, And a source connected to a resistor (R3) of the ground. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960010596A 1996-04-09 1996-04-09 Current-controlled oscillator KR970072705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960010596A KR970072705A (en) 1996-04-09 1996-04-09 Current-controlled oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960010596A KR970072705A (en) 1996-04-09 1996-04-09 Current-controlled oscillator

Publications (1)

Publication Number Publication Date
KR970072705A true KR970072705A (en) 1997-11-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960010596A KR970072705A (en) 1996-04-09 1996-04-09 Current-controlled oscillator

Country Status (1)

Country Link
KR (1) KR970072705A (en)

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