A programmable gain amplifier with DC-offset cancellation for power line communication

This paper presents an improved DC-offset cancellation (DCOC) circuit for programmable-gain amplifier (PGA) in power line communication. It is a speed-enhanced and low-noisy method by using current-mode feedback. The output DC-offset can be reduced from several hundred millivolts to less than 5mV ov...

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Bibliographic Details
Published in2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology pp. 551 - 553
Main Authors Chaoli Zhong, Di Zhu, Guanzhong Huang, Peiyuan Wan, Ping Lin
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2010
Subjects
Band pass filters
Bandwidth
Electronics packaging
Gain
Power line communications
Resistors
Transceivers
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Summary:This paper presents an improved DC-offset cancellation (DCOC) circuit for programmable-gain amplifier (PGA) in power line communication. It is a speed-enhanced and low-noisy method by using current-mode feedback. The output DC-offset can be reduced from several hundred millivolts to less than 5mV over 64 dB gain range. Furthermore, this proposed technique does not bring in excessive design complexity or large chip area by reusing master-slave configuration that already existed in the system. The circuit is designed in 0.18μm CMOS technology.
ISBN:9781424457977
1424457971
DOI:10.1109/ICSICT.2010.5667337