2002•Unpublished venueRequires access
A rail-to-rail CMOS operational amplifier design for low voltage systems
Chia‐Hsiung Kao, Yin-Fang Wei, Huan-Chou Kuo
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Abstract
An improved design solution of very low voltage rail-to-rail operational amplifiers is proposed. A dynamic level-shifting circuit is proposed to overcome the dead zone in the input common-mode voltages of the low voltage rail-to-rail operational amplifier. Given a supply voltage of 1.3 V, the circuit is designed and simulated in HSPICE with 0.5 /spl mu/m CMOS process parameters of UMC.