一种0.8V 2.4μA CMOS全差分放大器  

A 0.8V, 2.4μA CMOS fully differential operational amplifier

作　　者：朱樟明[1] 杨银堂[1] 尹韬[1] 任乐宁[1] 

机构地区：[1]西安电子科技大学微电子研究所,陕西西安710071

出　　处：《电路与系统学报》2009年第4期66-69,共4页Journal of Circuits and Systems

基　　金：国家自然科学基金资助项目(60725415;60676009);国家863计划资助项目(2009AA01Z258;2009AA01Z260);西安AM创新基金资助项目(XA-AM-200814)

摘　　要：基于0.25μm标准CMOS工艺,采用0.8V开关电容共模反馈电路技术和PMOS衬底驱动技术提出了一种新型0.8V 2.4μA全差分放大器。在0.8V单电源电压下,全差分放大器的直流开环增益为63.8dB,相位裕度为60度,单位增益带宽为7.4MHz,输出电压范围为18～791mV,其中新型模拟开关的输入/输出电压范围为0～800mV,整个放大器的电源电流为2.4μA,版图面积为410×360μm2。Based on the 0.25μm standard CMOS technology, a novel 0.8V 2.4μA fully differential operational amplifier is implemented in this paper, along with novel quasi floating gate switch capacitor CMFB circuits. With a 0.8V single power supply, the DC open-loop gain of the amplifier is 69.5dB, the phase margin is 63° and the unit gain band width is 715kHz and the input output voltage range is 18-791mV. The power dissipation of the amplifier is 2.4μA. The current active size of the amplifier layout is about 410×360μm^2.

关 键 词：低压 低功耗 PMOS衬底驱动 全差分放大器 

分 类 号：TN402[电子电信—微电子学与固体电子学]