A 1-V 25-dB 100-MHz CMOS variable gain amplifier cell

Naktongkul, P.; Thanachayanont, A.

A 1-V 25-dB 100-MHz CMOS variable gain amplifier cell

Author(s)

Naktongkul, P.

Thanachayanont, A.

Date Issued

December 1, 2004

Type

Conference Paper

Abstract

This paper proposes a novel low-voltage, low-power wide-bandwidth variable gain amplifier (VGA) cell. The proposed circuit combines source degeneration and current-mode techniques to achieve high linearity and constant bandwidth. Using a 0.35-μm CMOS process and dissipating 84 μW from a 1-V supply voltage, the proposed VGA cell can have a voltage gain varying from 0 dB to 25-dB DC gain while maintaining a constant bandwidth of 100-MHz.

Citation

IEEE International Symposium on Communications and Information Technologies Iscit 2004, 1, 527-530, 2004