CCII+ based novel waveform generator with grounded resistor/capacitor for tuning

This paper presents a new topology for waveform-generation using two current conveyors, and a grounded capacitor or a resistor for tuning. It uses current-conveyors in place of voltage op-amps to offer better linearity, bandwidth, slew rate and thermal stability. Measured results obtained using commercially available devices AD844AN and passive components show excellent linearity and tunability for both grounded resistor and capacitor topologies over the range of interest. Component sensitivity and temperature-sensitivity from -150°C to +150°C are studied. A comparison with existing candidate-designs shows superiority of the proposed design on all aspects. Grounded-connection of tuning components makes digital control easy.

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