Title :
A Novel Tunable Transconductance Amplifier Based on Voltage-Controlled Resistance by MOS Transistors
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield
Abstract :
A new tunable transconductance amplifier is proposed for the programmable analog signal processing or low power filter applications. The transconductor linearization is based on the compensation of nonlinear behaviour by two MOS transistors. The transconductance amplifier in this brief exhibits the good common-mode dynamic range and the voltage-controlled transconductance. HSPICE circuit simulation using 0.18-mum standard CMOS technology shows the plusmn50% tunable transconductance range with the plusmn0.2-V control voltage, and the linearity of less than 60 dB in the total harmonic distortion for the 0.6 VPP input signal
Keywords :
CMOS analogue integrated circuits; MOSFET; active networks; amplifiers; 0.18 micron; CMOS technology; HSPICE circuit simulation; MOS transistors; analog MOS integrated circuits; low power filter applications; programmable analog signal processing; transconductor linearization; tunable amplifiers; tunable filters; tunable transconductance amplifier; voltage-controlled conductance; voltage-controlled resistance; voltage-controlled transconductance; CMOS technology; Circuit simulation; Dynamic range; MOSFETs; Power filters; Signal processing; Transconductance; Transconductors; Tunable circuits and devices; Voltage; Analog MOS integrated circuits; tunable amplifiers; tunable filters; voltage-controlled conductance;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2006.875309
