A Novel CMOS CCCII Based on Cross-Coupled Differential Transistor Pair and Its Application

摘要

In this paper, a novel CMOS circuit of second-generation current controlled conveyor (CCCII) is proposed, which offers wide input voltage range and large 3 dB bandwidth of voltage-current transfer gain with high linearity under low supply voltage. The core of this CCCII adopts cross-coupled differential transistor pair as input stage instead of conventionally source-coupled and the principle of the circuit is analyzed theoretically in detail. This CCCII is implemented by PSPICE program in TSMC 0.18 A mu m RF CMOS technology and verified by simulation results. A current-mode universal filter which consists of two proposed CMOS CCCIIs is also simulated to validate the feasibility of the new circuit topology.