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Part Number: TIDA-010029
We are developing a wearable device that can be weared on ears. The functions include PPG measurements and standard audio speaker/mic hands free. Following are my questions:
Thank you for your interest in TIDA-010029.
This design has not been tested in the vicinity of a speaker and mic as the purpose was mainly to use at wrist or arm.
Also, there is no combined reference design available. However, there is a reference schematic for stethoscope which shows interface to speaker circuit (www.tij.co.jp/.../sprab38a.pdf )
The microphone will need a preamp and matching circuit depending on the type. Here is an example schematic for interfacing microphone (https://www.ti.com/lit/df/tidrye7/tidrye7.pdf )
I would happy to review your schematic once you have it in place. Thank you.
Sanjay R. Pithadia
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In reply to Sanjay Pithadia:
Thanks for responding to my query and recommendations.
As a first step I was wondering if CC3200AUDBOOST can be used to evaluate the combined functionality.
In reply to Yasir Siddiqui:
It depends on how many resources you need.
Depending on op-amps, and other components, you will have to check the availability in CC3200. I would recommend to start with a discrete implementation prototype design and then move towards integrated components.
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