A Power and Data Telemetry System for Biomedical Implants
نویسنده
چکیده
This paper describes the design of a power and data telemetry system intended for biomedical implants. The power generation unit utilizes a voltage quadruple, a novel voltage limiter, a new low-power supply-independent voltage reference and a linear voltage regulator. The ASK demodulator uses a high performance comparator based scheme which can recover modulation indices range from 5% up to 90%. Using a 0.18μm CMOS technology the whole system consumes 55μA from the induced power (excluding stimulation current). The system is capable of providing 1.1mA stimulation current under a 3V regulated supply. Keywords-power and data telemetry; ASK demodulation; voltage multiplier; voltage regulation; biomedical implants
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