A 270MHz, 1 Vpk-pk, low-distortion variable gain amplifier in 0.35m CMOS process Conference Paper

abstract

• A fully balanced CMOS Variable Gain Amplifier (VGA) for high frequency applications and large signals is presented. The VGA consists of an analog multiplier, current gain stages, and resistive loads. A frequency compensation scheme based on a capacitive feed-forward technique increases the bandwidth by more than 60 %. Common-Mode Feed-Forward (CMFF) techniques are used to minimize dc offsets. The gain can be programmed from 0 dB to 42 dB with -3 dB bandwidth greater than 270 MHz. The Third Harmonic Distortion (HD3) is less than -55 dB for differential input and output voltages of 1 Vpk-pk. The VGA was fabricated in 0.35 m CMOS process, and consumes around 54 mW from a single power supply of 2.7 V. 2002 Non IEEE.

authors

• Silva-Martinez, Jose

published proceedings

• European Solid-State Circuits Conference

author list (cited authors)

• Tan, S. T., & Silva-Martinez, J.

complete list of authors

• Tan, ST||Silva-Martinez, J

publication date

• December 2002

published in

• European Solid-State Circuits Conference  Journal

start page

• 307

end page

• 310