/spl plusmn/1.5 V supply, BiCMOS wideband DVCCII and its applications as programmable OTA and analog multiplier

Abstract

A wide bandwidth BiCMOS differential voltage second generation current conveyor (DVCCII) is presented. It has the advantages of a wide bandwidth, low input impedance at X-terminal, and low voltage operation. It is a useful building block for analog circuits, especially for application demanding differential input. It can be directly used with MOS transistors operating in ohmic region to implement required analogue functions. As applications, DVCCII based OTA, and DVCCII based analog multiplier are presented. PSPICE simulations indicate the very good performance of the proposed DVCCII and its circuits applications.