Dear forum,
I know that this subject has been covered several times before in the last 4-5 years here in the forum with rather discouraging conclusions, but the DB9 pulse-oximetry connector in the AFE44x0SPO2EVM User's Guide (Rev. C) (http://www.ti.com/lit/ug/slau480c/slau480c.pdf) gave me some hope again. In this document there is specifially the connection to a phototransistor mentioned.
In our non-portable application we want to have the PPG sensor as small as possible. However, PPG sensors using a PD are designed to maximze the signal output via an increased PD area. Therefore, considering a smaller phototransistor-based approach seems straightforward. New Japan radio offers a tiny PPG sensor (1.9x2.6x0.8 mm, NJL5303R, covered here before) which migh be promissing.
So I wonder if in the meanwhile anybody has successfully implemented the use of TI's awesome AFE's with this sort of sensors and/or if there is some helpful advice to get going?
Best and THX,
A.
