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The paper presents a highly linear CMOS triode transconductor with a wide tuning capability for low voltage and low power applications. The use of a novel feedback loop regulating the drain voltage of input transistor in triode region achieves a highly linear voltage to current conversion. This design uses UMC 0.18um CMOS process. Simulation result shows the proposed transconductor, operated in 1.2V supply voltage, has less than 0.1% total harmonic distortions (THD) for 1MHz 0.8Vp-p differential input. The power consumption is 203uW, when 0.55V control voltage is applied.

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