Floating-Gate MOSFET Based Tunable Voltage Differencing Transconductance

Active circuit element tunable VDTA (Voltage floating-gate MOSFETs is proposed in this paper. The mentioned VDTA is brought as the convenient element for current mode signal processing, which might be very suitable for variety of applications such as the circuit has the advantage of being tunable. VDTA is supposed for usage mostly in current mode circuits but it is also good choice in case of voltage mode and/or hybrid (voltage is a type of analog block consists of two multiple floating-gate MOSFETs as input stage. Two examples of biquad filters implemented using VDTA are simulated with PSOICE simulations using the 0.18 ? design in the paper.