期刊
IEEE JOURNAL OF SOLID-STATE CIRCUITS
卷 39, 期 12, 页码 2446-2456出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2004.837027
关键词
analog-digital conversion; biomedical equipment; digital-analog conversion; high voltage; implantable biomedical devices; leakage cancellation; low power; subthreshold; switched-capacitor circuits; switched-capacitor filters
Low power consumption is crucial for medical implant devices. A single-chip, very-low-power interface IC used in implantable pacemaker systems is presented. It contains amplifiers, filters, ADCs, battery management system, voltage multipliers, high voltage pulse generators, programmable logic and timing control. A few circuit techniques are proposed to achieve nanopower circuit operations within submicron CMOS process. Subthreshold transistor designs and switched-capacitor circuits are widely used. The 200 k transistor IC occupies 451 mm(2), is fabricated in a 0.5-mum two-poly three-metal multi-V-t process, and consumes 8 muW.
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