High-performance BiCMOS current Controlled CDBA and application

This article presents the modified design for a basic current-mode building block for analog signal processing, named as current controlled current differencing buffered amplifier (CCCDBA). Its parasitic resistances at two current input ports can be controlled by an input bias current. The output current and voltage offsets including power consumption are low compared to ordinary CCCDBA description with same implemented technology. The proposed element is realized in a BiCMOS technology and its performance is examined through PSPICE simulations. In addition, an example as a current-mode multiplier/divider is included. It displays usability of the proposed element.