Title :
Mixed-mode continuous-time video acquisition filters
Author :
Azadet, K. ; Porte, J. ; Yang, F. ; Hurwitz, J.E.D.
Author_Institution :
ELEC Dept., Telecom Paris, France
fDate :
30 May-2 Jun 1994
Abstract :
As an alternative to the usual purely analog antialiasing filters, a mixed mode approach is studied, and the existence of a continuous-time representation is recalled. Using a slight oversampling of a factor of two typically, the specifications of the analog filter can be relaxed and its sensitivity can be significantly reduced. A particular class of linear-phase transfer functions is studied, which leads to a very simple current-mode implementation. This is illustrated by a practical acquisition video filter design problem
Keywords :
continuous time filters; integrated circuit design; mixed analogue-digital integrated circuits; sensitivity; transfer functions; video signal processing; continuous-time video acquisition filters; current-mode implementation; filter design problem; linear-phase transfer functions; mixed mode approach; oversampling; sensitivity; CMOS technology; Circuits; Cutoff frequency; Delay; Digital filters; Finite impulse response filter; Frequency conversion; Sampling methods; Telecommunications; Transfer functions;
Conference_Titel :
Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-1915-X
DOI :
10.1109/ISCAS.1994.409493
