DocumentCode
3551378
Title
Digital controlled variable gain amplifier (DVGA) for IF to digital conversion
Author
Roovers, Raf
Author_Institution
Philips Research Laboratories, Eindhoven, Netherlands
fYear
1998
fDate
22-24 Sept. 1998
Firstpage
152
Lastpage
155
Abstract
A Digital controlled Variable Gain Amplifier (DVGA) for IF to digital conversion systems is presented. The amplification ranges from 6 to 30 dB in 6dB steps. The differential amplifier is optimised for low noise, low distortion and fast settling behaviour. In combination with a 12 bit A/D converter, the DVGA increases the dynamic range of the IF to digital conversion system to 100 dB. The proposed DVGA combines low noise of 4nV/sqrt(Hz) with harmonic distortion below -50 dBc for 2Vpp output signal. The device is implemented in a 13 GHz / 1µm BiCMOS technology and consumes about 150mW.
Keywords
Analog-digital conversion; Bandwidth; Control systems; Digital control; Digital filters; Dynamic range; Gain; Laboratories; Power amplifiers; Telecommunications;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 1998. ESSCIRC '98. Proceedings of the 24th European
Type
conf
DOI
10.1109/ESSCIR.1998.186231
Filename
1470988
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