Abstract
The advent of differential voltage current conveyor (DVCC) has opened up new avenues in analog circuit design. However, a feature that is lacking in DVCC-based circuits is the non-availability of external control over circuit performance. To overcome this disadvantage, a new Digitally Controlled DVCC (DC-DVCC) has recently been proposed. In the present work, the DC-DVCC has been employed to design digitally programmable current-mode first-order continuous-time analog filters. Parameter tunability is achieved by the use of a 3-bit digital control word. The proposed circuits are amenable for monolithic integration by virtue of the fact that only grounded components are employed. Circuit simulations using PSPICE yielded promising results.
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