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A 05-V 440-µW Frequency Synthesizer for Implantable Medical Devices Wu-Hsin Che
一种用于植入式医疗设备的超低功耗频率合成器设计
0.5V, 440µW, 91.5 dBc/Hz @1MHz
频率合成器植入式医疗设备超低功耗电荷泵电压控制振荡器
▸动态阈值电压和开关耦合技术的电荷泵设计
▸基于环形电压控制振荡器的双电阻-变容管调谐技术
▸超低电压和电流设计技术
Abstract
An ultra-low-power, low-voltag e frequency syn-
thesizer designed for implantable medical devices is presented.
Several design techniques are adopted to address the issues in
ultra-low voltage and current design. The charge pump (CP) in the
synthesizer utilizes dynamic threshold-voltage and switch-coupled
techniques to provide a high driving current with a low standby
current. The synthesizer adopts a ring-based voltage controlled
oscillator (VCO) that utilizes a dual resistor-varactor tuning
te