论文信息 - CMOS linear programmable transconductor suitable for adjustable Gm-C filters

CMOS linear programmable transconductor suitable for adjustable Gm-C filters

A novel CMOS linear programmable transconductor is presented. It is based on a telescopic cascode operational transconductance amplifier with source degeneration implemented by means of highly linear tunable active resistors. The transconductor has been designed in a 0.5 mum CMOS technology featuring a third-order intermodulation (IM3) of -54.8 dB at 10 MHz for a 1 V pp output voltage. Its feasibility for Gm-C filter design has been experimentally validated with a 1 MHz tunable third-order Chebyshev lowpass filter suitable for Bluetooth applications.

Jaime Ramirez-Angulo | Ramon G. Carvajal | Antonio J. Lopez-Martin | C. Lujan-Martinez | T. Sánchez-Rodríguez

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