INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016
open access , Peer-reviewed, and Refereed Journals, Impact factor 8.15
DESIGN OF TWO-STAGE CLASS AB CASCODE OP-AMP WITH IMPROVED GAIN
Authors Name:
B.Hinduja
, Dr. G.V. Maha Lakshmi
Unique Id:
IJSDR1610010
Published In:
Volume 1 Issue 10, October-2016
Abstract:
Operational amplifier is a main block in analog and mixed-signal-processing circuits, such as D/A, A/D circuits and switched-capacitor circuits and filters. The speed and accuracy of operational amplifier depends on the bandwidth and gain of the op-amp. The main drawback of single stage operational amplifier is low open loop gain. A typical op-amp designed with differential stage, intermediate gain stage, and a class AB stage. In this paper, various two stage class AB op-amps are analyzed. The two-stage class AB cascode op-amp with current replicating branch using an adaptive load is proposed to achieve high gain and symmetrical slew rate. Class AB operation is achieved by the combination of current replicating branch with scaled down transistors and adaptive loads at the output stage. The main advantage of class AB amplifier is symmetrical slew rate and low static power dissipation. This paper shows the analysis like transient response, AC response in Cadence 180nm CMOS Technology.
Keywords:
op-amp, class AB amplifier, slew rate, gain, CMOS.
Cite Article:
"DESIGN OF TWO-STAGE CLASS AB CASCODE OP-AMP WITH IMPROVED GAIN", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.1, Issue 10, page no.54 - 58, October-2016, Available :http://www.ijsdr.org/papers/IJSDR1610010.pdf
Downloads:
000337348
Publication Details:
Published Paper ID: IJSDR1610010
Registration ID:160869
Published In: Volume 1 Issue 10, October-2016
DOI (Digital Object Identifier):
Page No: 54 - 58
Publisher: IJSDR | www.ijsdr.org
ISSN Number: 2455-2631
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