Takehito Doi

Semiconductor integrated circuit having polycell structure and method of designing the same

PLL circuit including a voltage controlled oscillator and a method for controlling a voltage controlled oscillator

Charge pump circuits for PLL frequency synthesizer

Bipolar integrated circuit having a unit block structure

ECL-to-CMOS signal level converter

Circuit for detecting difference in capacitance

DC-DC converter and control for DC-DC converter

PLL frequency synthesizer with lock detection circuit

Voltage controlled oscillator and PLL circuit including voltage controlled oscillator

VOLTAGE-CONTROLLED OSCILLATOR, PLL CIRCUIT AND SEMICONDUCTOR DEVICE