넓은 주파수 범위에서 동작하는 버퍼 및 상기 버퍼를포함하는 반도체 장치

Buffer for operating in wide frequency range and semiconductor having the same

Abstract

A buffer and a semiconductor device including the same are provided to reduce signal distortion by operating within a wide frequency range stably. A differential amplifier(11) outputs a first differential signal and a second differential signal by amplifying the difference between the first input signal and the second input signal. A feedback inverter part(21) includes a first feedback inverter and a second feedback inverter. Each of the first and second feedback inverters includes a plurality of feedback resistors. The resistance of each feedback resistor is controlled in response to a flag signal. A coupling unit(13) includes a first capacitive element and a second capacitive element. The first capacitive element is connected between the first output terminal of the differential amplifier and the first inverter of the first output terminal. The second capacitive element is connected between the second output terminal of the differential amplifier and the input terminal of the second inverter.
넓은 주파수 범위에서 동작할 수 있는 버퍼가 개시된다. 상기 버퍼는 차동 입력 단자들과 차동 출력 단자들을 포함하는 차동 증폭기와, 각각이 각각의 피드백 저항을 포함하는 다수의 피드백 인버터들과, 각각이 상기 차동 출력 단자들 각각과 상기 다수의 피드백 인버터들 각각의 입력 단자 사이에 접속된 다수의 용량성 소자들을 포함한다. 상기 각각의 피드백 저항의 저항값은 플래그 신호에 응답하여 조절된다.

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