1-V rail-to-rail operational amplifiers in standard CMOS technology

被引：72
|
作者：
Duque-Carrillo, JF [1 ]
Ausín, JL
Torelli, G
Valverde, JM
Domínguez, MA
机构：
[1] Univ Extremadura, Dept Elect & Elect Engn, E-06071 Badajoz, Spain
[2] Univ Pavia, Dept Elect, I-27100 Pavia, Italy
来源：
IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2000年 / 35卷 / 01期
关键词：
CMOS analog integrated circuits; low voltage; operational amplifiers; rail-to-rail operation;
D O I：
10.1109/4.818918
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The constraints on the design of CMOS operational amplifiers with rail-to-rail input range for extremely low supply voltage operation, are addressed. Two design approaches for amplifiers based on complementary input differential pairs and a single input pair, respectively, are presented. The first realizes a feedforward action to accommodate the common-mode (CM) component of the input signals to the amplifier input range. The second approach performs a negative feedback action over the input CM signal. Two operational amplifiers based on the proposed approaches have been designed for l-V total supply operation, and fabricated in a standard 1.2-mu m CMOS process. Experimental results are provided and the corresponding performances are discussed and compared.
引用
收藏
页码：33 / 44
页数：12
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