TITLE:
Two Simple Analog Multiplier Based Linear VCOs Using a Single Current Feedback Op-Amp
AUTHORS:
Data Ram Bhaskar, Raj Senani, Abdhesh Kumar Singh, Shanti Swarup Gupta
KEYWORDS:
Voltage-Controlled Oscillators, Current Feedback Op-Amps, Current-Mode Circuits, Analog Multipliers
JOURNAL NAME:
Circuits and Systems,
Vol.1 No.1,
July
28,
2010
ABSTRACT: Two simple voltage-controlled-oscillators (VCO) with linear tuning laws employing only a single current feedback operational amplifier (CFOA) in conjunction with two analog multipliers (AM) have been highlighted. The workability of the presented VCOs has been demonstrated by experimental results based upon AD844 type CFOAs and AD534 type AMs.