This paper presents a new simple charge-pump circuit, which is suitable for high speed PLL circuit and operates at a low supply voltage. The charge-pump operates at 800㎒ with a supply voltage of 1.5V. Moreover, the output voltage of the proposed cha...
This paper presents a new simple charge-pump circuit, which is suitable for high speed PLL circuit and operates at a low supply voltage. The charge-pump operates at 800㎒ with a supply voltage of 1.5V. Moreover, the output voltage of the proposed charge-pump circuit has a stable voltage step. The charge-pump is designed in a standard CMOS 0.25㎛ technology and simulated by HSPICE.