A very low power CMOS mixed-signal IC for implantable pacemaker applications

A single-chip, very-low-power interface IC used in implantable pacemaker systems is presented. It contains LNAs, filters, ADCs, a battery management system, voltage multipliers, high voltage pulse generators, programmable logic and timing control. The 200k transistor IC occupies 49mm/sup 2/, is fabricated in a 0.5/spl mu/m 2P3M multi-V, CMOS process and consumes 8/spl mu/W from a 2.8V supply.