A Noise-Reduced Light-to-Frequency Converter for Sub-0.1% Perfusion Index Blood SpO<inline-formula><tex-math notation="LaTeX">$_{\text 2}$</tex-math></inline-formula> Sensing

A Noise-Reduced Light-to-Frequency Converter for Sub-0.1% Perfusion Index Blood SpO- Sensing | IEEE Journals & Magazine | IEEE Xplore