Details

Autor(en) / Beteiligte

• Shuenn-Yuh Lee
• Su, M. Y.
• Ming-Chun Liang
• You-Yin Chen
• Cheng-Han Hsieh
• Chung-Min Yang
• Hsin-Yi Lai
• Jou-Wei Lin
• Qiang Fang

Titel

A Programmable Implantable Microstimulator SoC With Wireless Telemetry: Application in Closed-Loop Endocardial Stimulation for Cardiac Pacemaker

Ist Teil von

• IEEE transactions on biomedical circuits and systems, 2011-12, Vol.5 (6), p.511-522

Ort / Verlag

United States: IEEE

Erscheinungsjahr

2011

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• A low-power, wireless, and implantable microstimulator system on chip with smart powering management, immediate neural signal acquisition, and wireless rechargeable system is proposed. A system controller with parity checking handles the adjustable stimulus parameters for the stimulated objective. In the current paper, the rat's intra-cardiac electrogram is employed as the stimulated model in the animal study, and it is sensed by a low-voltage and low-power monitoring analog front end. The power management unit, which includes a rectifier, battery charging and detection, and a regulator, is used for the power control of the internal circuits. The stimulation data and required clock are extracted by a phase-locked-loop-based phase shift keying demodulator from an inductive AC signal. The full chip, which consumes 48 μW only, is fabricated in a TSMC 0.35 μm 2P4M standard CMOS process to perform the monitoring and pacing functions with inductively powered communication in the in vivo study.