Current differential amplifiers: new circuits and applications

New CMOS current differential amplifiers are proposed suitable for analogue signal processing at high frequencies. They consist of simple current mirr ors, which are easy to design and to implement in IC form. Low-voltage low- power design is feasible. Relying on these devices a number of applications are obtained, including lossy and lossless integrators, simulated inductor s, active filters, and harmonic oscillators. Theoretical expressions are gi ven for all of the proposed new circuits. The verification of the circuits is also achieved by simulation. Copyright (C) 2001 John Wiley & Sons, Ltd.