Title :
A 50-MHz dB-linear programmable-gain amplifier with 98-dB dynamic range and 2-dB gain steps for 3 V power supply
Author :
Nah, Kyung-Suc ; Park, Byeong-Ha
Author_Institution :
Samsung Electron. Co. Ltd., Kyungki-Do, South Korea
fDate :
4/1/2003 12:00:00 AM
Abstract :
A programmable-gain amplifier (PGA) circuit introduced in this paper has a dynamic gain range of 98 dB with 2 dB gain steps and is controlled by 6-bit gain control bits for a 3 V power supply. It has been fabricated in a 0.5 /spl mu/m 15 GHz f/sub T/ Si BiCMOS process and draws 13 mA. The active die area taken up by the circuit is 400 /spl mu/m /spl times/ 1170 /spl mu/m. A noise figure (NF) of 4.9 dB was measured at the maximum gain setting. In addition, an analysis of the bias current generation to provide dB-linear gain control is presented.
Keywords :
BiCMOS analogue integrated circuits; VHF amplifiers; automatic gain control; programmable circuits; silicon; 0.5 micron; 13 mA; 3 V; 4.9 dB; 50 MHz; AGC; Si BiCMOS process; VGA quad; bias current generation; dB-linear gain control; dynamic gain range; programmable-gain amplifier; Analog integrated circuits; Dynamic range; Electronics packaging; Gain control; Noise measurement; Power amplifiers; Power supplies; Radio frequency; Radiofrequency integrated circuits; Transceivers;
Journal_Title :
Very Large Scale Integration (VLSI) Systems, IEEE Transactions on
DOI :
10.1109/TVLSI.2003.810797
