Title :
1.5-V 900-/spl mu/W 40-dB CMOS variable gain amplifier
Author :
Naktongkul, P. ; Thanachayanont, A.
Author_Institution :
Fac. of Eng., King Mongkut Inst. of Technol., Bangkok
Abstract :
This paper describes the design and implementation of a low-voltage high-frequency variable gain amplifier in a 0.35-mum CMOS technology. The proposed circuit employs source degeneration and current feedback techniques to achieve high linearity and wide bandwidth. Experimental results show that the overall amplifier (including output voltage buffer) has a linear-in-dB controllable gain range of 40-dB with more than 10-MHz bandwidth, while draining 600 muA from a 1.5-V power supply voltage
Keywords :
CMOS analogue integrated circuits; amplifiers; automatic gain control; circuit feedback; low-power electronics; 0.35 micron; 1.5 V; 40 dB; 600 muA; 900 muW; CMOS variable gain amplifier; controllable gain; current feedback; source degeneration; Bandwidth; Differential amplifiers; Feedback circuits; Gain control; Linearity; Mirrors; Power supplies; Radiofrequency amplifiers; Transconductance; Voltage control;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1692894
