Quasi Rail-to-Rail Very Low-Voltage OPAMP With a Single pMOS Input Differential Pair Academic Article uri icon


  • In this brief, a quasi-rail-to-rail low-voltage operational amplifier (VDD-VSS-VDSATP-VDSATN) is introduced. A common-mode adapter that uses the common-mode voltage present at the common-source node of the available differential pair to accommodate the large common-mode input signal is proposed. The common-mode adapter operates properly at 300 kHz while driving a load capacitor of 15 pF and employs only 95 W of static power. The amplifier was fabricated in a standard AMI 0.5- m CMOS process ( Vtn= 0.7 V and Vtp= -0.9 V) and achieves an IM3 of 48 dB at 300 kHz for a two-tone input signal of 0.8 Vpk-pkA 1-V total supply voltage was used. 2006, IEEE. All rights reserved.

published proceedings

  • IEEE Transactions on Circuits & Systems II Express Briefs

author list (cited authors)

  • Baez-Villegas, D., & Silva-Martinez, J.

citation count

  • 19

complete list of authors

  • Baez-Villegas, David||Silva-Martinez, Jose

publication date

  • November 2006