Practically implemented electronically controlled CMOS voltage differencing current conveyor

This paper presents electronically controllable concept of the CMOS voltage differencing current conveyor (VDCC) for precise operations with large dynamic range and for robust automotive applications. It was designed and fabricated in ON Semiconductor 0.7 um I2T100 technology. Because of unique internal structure, not only value but also polarity of transconductance stage of VDCC can be controlled electronically by external DC voltage. Moreover, adjusting of resistance of current input terminal is possible by DC bias current. This contribution includes also the most important characteristics of manufactured chip obtained by laboratory measurement of prototype sample and obtained controllability ranges are compared with Cadence Spectre simulations.