【作者】 庞世甫； 王继安； 张冰； 李汇； 李崴； 钟志亲； 龚敏；

【Author】 Pang Shi-fu, Wang Ji-an, Zhang Bing, Li Hui, Li Wei, Zhong Zhiqin, Gong Min Key lab of Microelectronics, College of Physical Science and Technology Sichuan University, Chengdu 610064 The College of Micro-electronics and Solid-state Electronics University of Electronic Science and Technology of China., 610054 Chengdu Sino microelectronics System Co., ltd. 610041

【机构】 微电子技术四川省重点实验室四川大学物理科学与技术学院； 电子科技大学微电子与固体电子学院； 成都华微电子系统有限公司；

【摘要】 设计了一种用于高速采样保持电路宽带高增益的跨导运算放大器,采用两级放大电路,共源共基和共源共栅电路来实现的。利用0．35um Bi CMOS工艺条件下Spectre仿真得到运算放大器的开环增益要大于60dB,单位增益带宽要大于 2．1GMz,输出摆幅能达到1．5V。更多还原

【Abstract】 A kind of wide bandwidth and high plus OTA in high speed T/H circuit was designed. Two cascaded amplifier circuits, which were a common source base circuit and a cascode circuit, were used. The results of the stimulation, based on the Spectre software with 0.35μm Bi CMOS technology module, showed that the amplifier had a open loop plus of more than 60dB, a unit plus bandwidth of more than 2.1 GHz and an output amplitude of 1.5V.更多还原