Title :
An optimized two stages low power sinc3 filter for ΣΔ modulators
Author :
Lombardi, A. ; Malcovati, P. ; Basto, A. ; Bonizzoni, E. ; Maloberti, F.
Author_Institution :
Univ. of Pavia, Pavia
Abstract :
This paper presents the design of a low power sinc3 filter implementing a decimation factor by 16 and suitable for a second order SigmaDelta modulators running at 256 MHz. The circuit uses the cascade of two stages and consumes only 48.1 muW, with 1.2 V voltage supply. The ultra-low power features come from both an architectural optimization and the use of suitable transistor level schemes. The circuit, simulated in a 0.18-mum CMOS technology, improves the overall power consumption by about 75.4% with respect to an already optimum conventional design.
Keywords :
CMOS analogue integrated circuits; FIR filters; VHF filters; cascade networks; circuit optimisation; circuit simulation; integrated circuit design; low-power electronics; sigma-delta modulation; CMOS technology; FIR filter; architectural optimization; cascaded circuits; decimation factor; frequency 256 MHz; optimized two stages low power sinc3 filter design; power 48.1 muW; power consumption; second order SigmaDelta modulators; size 0.18 mum; transistor level schemes; ultra-low power features; voltage 1.2 V; CMOS analog integrated circuits; CMOS technology; Circuit simulation; Design optimization; Digital signal processing; Energy consumption; Finite impulse response filter; Low voltage; Power filters; Power supplies;
Conference_Titel :
Research in Microelectronics and Electronics Conference, 2007. PRIME 2007. Ph.D.
Conference_Location :
Bordeaux
Print_ISBN :
978-1-4244-1000-2
Electronic_ISBN :
978-1-4244-1001-9
DOI :
10.1109/RME.2007.4401816
