A CMOS high-linearity transconductor useful for IC filtering applications is presented. It is based on a feedback unity-gain amplifier driving a resistor to achieve linear voltage-to-current conversion. Simulation results are provided on a design example using a 0.35-μm technology, powered from a 3.3V supply, and using a total dc current of 150 μA. The 3-dB bandwidth was 630 MHz and HD3, onto a load resistor of 20kΩ, was -82 dB at 1MHz.
150 uA CMOS TRANSCONDUCTOR with 82 dB SFDR
PENNISI S;G. SCOTTI;
2007-01-01
Abstract
A CMOS high-linearity transconductor useful for IC filtering applications is presented. It is based on a feedback unity-gain amplifier driving a resistor to achieve linear voltage-to-current conversion. Simulation results are provided on a design example using a 0.35-μm technology, powered from a 3.3V supply, and using a total dc current of 150 μA. The 3-dB bandwidth was 630 MHz and HD3, onto a load resistor of 20kΩ, was -82 dB at 1MHz.File in questo prodotto:
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