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A New Approach to Realize Variable Gain Amplifiers

✍ Scribed by Khaled M. Abdelfattah; Ahmed M. Soliman


Book ID
110328963
Publisher
Springer
Year
2002
Tongue
English
Weight
125 KB
Volume
30
Category
Article
ISSN
0925-1030

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## Abstract A variable gain amplifier is demonstrated using only one fully‐differential operational transconductance amplifier (OTA) as the core circuit element.Gain control is achieved by varying the transconductance of the OTA and by using an output buffer circuit to sum the output signals of the