A simple and robust “cell-based” method is presented for the design of variable-gain
amplifiers (VGAs). The proposed unit cell utilizes a unique gain compensation method and …

ABSTRACT A variable gain amplifier (VGA) is an essential building block used in the
automatic gain control (AGC) loop to provide a continuous, adjustable gain for the signal …

In this paper, a differential-ramp based variable gain amplifier (VGA) technique is
introduced. Using the proposed technique, digitally programmable gain amplifiers (PGAs) …

This paper describes use of a novel exponential approximation for designing dB-linear
variable gain amplifiers (VGAs). The exponential function is accurately generated using a …

This paper presents the design and analysis of a wideband inductorless variable-gain
amplifier (VGA) for high-speed communication receiver systems. The proposed …

This paper reports a wideband inductorless automatic gain control (AGC) amplifier for
wireline applications. To realize a dB-linear AGC range, a pseudo-folded Gilbert cell driven …

This paper presents a compact digitally controlled variable gain amplifier (DVGA) with
capabilities of both temperature compensated linear-in-decibel (dB-linear) gain control and …

A simple yet effective approach for variable-gain amplifier (VGA) design with accurate dB-
linear characteristic is presented. In order to extend the bandwidth of the designed VGA with …

ABSTRACT CMOS implementations of variable gain amplifiers (VGAs) and programmable
gain amplifiers (PGAs) are reviewed in this paper. They fall into two categories: Radio …

A low-power variable-gain amplifier (VGA) based on transconductance (g_m)-ratioed
amplification is analyzed and designed with improved linearity. The VGA has the merits of …