04312641A MICRO POWER SIGMA-DELTA A/D CONVERTER IN 0.35-gM CMOS FOR LOW FREQUENCY APPLICATIONS Email: adnnangundel ieee org Adnan GuLndelt, William N. Carr illiamcarr njitedo t1lNew Jersey Institute of Technology, Newark, NJ 07102 t)Telephonics Corporation, 815 Broad Hollow Road, Farmingdale, NY 11735 ABSTRACT A very low-power single loop second order 12-bit sigmadelta (Y-A) A/D converter in 0.35- m triple metal, double poly CMOS technology has been designed for low frequency applications. The A/D converter incluides a second-order LA modulator together with a DSP circuit comprising of a cascade of CIC and FIR digital filters. The design was focused on the minimization of power dissipation of the modulator that operates from a single 2-4 V power supply. A reduction of the power dissipation is o……