Domestic Indirect Feedback Compensation of multiple-stage amplifiers for multiple-voltage level-converting amplification

Author

Yang, Shang-Hsien ; Wang, Chua-Chin

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

fYear

2011

fDate

2-4 May 2011

Firstpage

1

Lastpage

4

Abstract

This investigation presents a Domestic Indirect Feedback Compensation (DIFC) operational amplifier for systems with both low voltage and high voltage circuits. The DIFC operational amplifier is capable of converting a voltage signal from a low voltage circuit and amplifying it into a large voltage signal to drive high voltage load. Since the Metal-Insulator-Metal (MIM) capacitors are not designed for high voltage applications and the feed-forward compensation causes pole-zero doublet as a result from the deviation of high voltage transistor characteristics from shuttle to shuttle, the DIFC is performed only using low voltage circuits. In other words, the feedback by connecting the output node of the operational amplifier is avoided. The proposed design is carried out using the TSMC 0.25 μm 1-poly 3-metal BCD process.

Keywords

MIM devices; capacitors; operational amplifiers; 1-poly 3-metal BCD process; domestic indirect feedback compensation; feed-forward compensation; metal-insulator-metal capacitors; multiple-stage amplifiers; multiple-voltage level-converting amplification; operational amplifier; pole-zero doublet; size 0.25 mum; Analog circuits; Capacitors; Joining processes; Low voltage; Resistance; Transconductance; Transistors; Analog circuits; frequency compensation; high voltage integrated circuits; multistage amplifiers; operational amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

IC Design & Technology (ICICDT), 2011 IEEE International Conference on

Conference_Location

Kaohsiung

ISSN

Pending

Print_ISBN

978-1-4244-9019-6

Type

conf

DOI

10.1109/ICICDT.2011.5783217

Filename

5783217