A New Concept of Differential-Difference Amplifier and Its Application Examples for Mixed Analog/Digital VLSI Systems

Zdzislaw CZARNUL
Tetsuya IIDA

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E78-A    No.3    pp.314-321
Publication Date: 1995/03/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section of Selected Papers from the 7th Karuizawa Workshop on Circuits and Systems)
Category: VLSI Design Technology and CAD
analog/digital circuits,  low voltage supply,  integrated circuits,  filters,  integrators,  frequency and offset compensation techniques,  programmable amplifiers,  neural nets,  

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This paper discusses a CMOS differential-difference amplifier circuit suitable for low voltage operation. A new multiple weighted input transconductor circuit structure is suggested to be use in DDA implementation. The proposed DDA can be employed in several analog/digital systems to improve their parameters. Selected examples of the proposed transconductor/DDA applications are also discussed.