1-V rail-to-rail operational amplifiers in standard CMOS technology (2000)
| Venue: | IEEE J. Solid-State Circuits |
| Citations: | 5 - 0 self |
BibTeX
@ARTICLE{Duque-carrillo001-vrail-to-rail,
author = {J. Francisco Duque-carrillo and José L. Ausín and Guido Torelli and Senior Member and José M. Valverde and Miguel A. Domínguez},
title = {1-V rail-to-rail operational amplifiers in standard CMOS technology},
journal = {IEEE J. Solid-State Circuits},
year = {2000},
volume = {35},
pages = {33--44}
}
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Abstract
Abstract—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 1-V total supply operation, and fabricated in a standard 1.2-μm CMOS process. Experimental results are provided and the corresponding performances are discussed and compared. Index Terms—CMOS analog integrated circuits, low voltage, operational amplifiers, rail-to-rail operation. I.
