Improve Sensor Performance and SNR in Pulse Oximeter Designs

Abstract: This tutorial discusses the different types of pulse oximeters including optical and reflective techniques and the design considerations taken when building high-end portable bedside monitors or mid and low-end battery-powered models. The discussion covers light absorption, sensor calibration, and details specifics within the transmit path leading to in-depth discovery of photodiode, interface, signal conversion, and data conversion characteristics. A functional block diagram and part recommendations are also included.
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Keywords: pulse oximetry, pulse ox, pulse monitor, oxygenation, patient monitor

Jun 21, 2010
TUTORIAL 4671

Improve Sensor Performance and SNR in Pulse Oximeter
Designs
By: John DiCristina
Jun 21, 2010

Abstract: This tutorial discusses the different types of pulse oximeters including optical and reflective techniques and the design
considerations taken when building high-end portable bedside mo