Abstract:
a delaying unit(20) for delaying a sine wave oscillating output; a comparator(22) for compensating the duty change of an offset voltage before processing a signal to stabilize the oscillator output by using the sine wave oscillator output and a delaying unit output as two input signals of the comparator when the offset voltage of the oscillator output is changed.
Abstract:
This circuit supplies a base voltage to produce fixed hysterisis value according to enable signals so that a ringer part generates the stable ringer signals. The N-bias circuit (2) generates a bias voltage (VNB) and outputs the start control signal (VSC), a level detector (1) detects the electric source (B+) and generates the detecting voltage (VSB), and a comparator (3) outputs the enable signal, such that the transistor (M8) changes the level of the base voltage (VREF) according to the comparator outputs.
Abstract:
PURPOSE: A fast multiplexer, a semiconductor device including the same, and an electronic device including the semiconductor device are provided to process data with low power and high speed using separated data pathes. CONSTITUTION: A first path circuit(13) transmits one of a plurality of input signals as a first transmission signal using a plurality of first type pass transistors. A second path circuit(15) transmits one of the plurality of input signals as a second transmission signal using a plurality of second type pass transistors. An output circuit(17) outputs one of two voltages as an output signal in response to the first and second transmission signals. The first and second type pass transistors are respectively comprised of NMOSFET or PMOSFET.
Abstract:
A level shifter having a mode selection function and a level shifting method are provided to operate some function blocks which are driven by using an output of the level shifter in a normal mode and a power down mode. A level shifter includes a level shifting unit(510) generating plural internal voltages, shifting voltage levels of plural input signals and outputting an output signal based on the internal voltages, and a mode control unit(520) controlling the voltage levels of the internal voltages in response to a mode selection signal. The input signals comprise a first signal with a first phase and a second signal with a second phase, the first and second phases not being the same. The mode selection signal indicates either of a normal mode and a power down mode.
Abstract:
본 발명은 반도체 장치의 입출력 회로에 관한 것으로서, 소정의 기준 전압이 인가되는 제1 패드, 외부 신호가 인가되는 제2 패드, 상기 제1 패드 및 제2 패드에 입력단이 연결되고 선택 신호에 제어단이 연결되며 상기 선택 신호에 응답하여 상기 기준 전압과 외부 신호의 전압 레벨을 비교하는 전압 비교기, 상기 제2 패드에 연결되며 상기 선택 신호에 응답하여 상기 외부 신호를 버퍼링(buffering)하는 버퍼, 및 상기 선택 신호에 응답하여 상기 전압 비교기의 출력과 상기 버퍼의 출력 중 하나를 출력하는 스위칭 회로를 구비함으로써 반도체 장치의 전력 소모가 감소된다.
Abstract:
A semiconductor integrated circuit includes a boundary scan register and a plurality of local monitor circuits. The local monitor circuits are arranged individually about peripheral circuit regions of a semiconductor integrated circuit, being spaced from the boundary scan register, in order to measure and predict operation speeds in accordance with local on-chip process variations at a plurality of locations on the peripheral circuit regions. The operational speed of the semiconductor integrated circuit is determined by taking correlations into account between an overall signal delay time measured by the boundary scan register and local signal delay times measured by the respective local monitor circuits.
Abstract:
본 발명은 3.3V/5V에서 모두 동작할 수 있는 인터페이스회로를 갖는 CCD용 수직 드라이버회로에 관한 것으로서, 특히 고전압원과 저전압원의 공통적으로 기준신호와 입력된 입력신호를 비교하여 비교 결과를 출력하는 인터페이스회로부; 인터페이스회로부의 출력신호를 레벨 변환하는 레벨 쉬프터부; 및 레벨 변환된 신호를 CCD용 수직 구동신호로 출력하는 게이트부를 구비하여 된 것을 특징으로 한다. 따라서, 본 발명에서는 5V의 고전압원으로 구동되는 입력신호와 3.3V의 저잔압원으로 구동되는 입력신호에 대해 공통적인 1.8V의 기준전압을 사용하기 때문에 입력신호의 전압원에 관계없이 겸용하여 사용가능하다.