Digital stethoscope

Adarsha K

Hi,

With regard to the lowpass filter provided in fig 5 of http://www.ti.com/lit/an/sprab38a/sprab38a.pdf. Please explain the use of R11 and R12. And please explain NC and NO in the same circuit,is it just a short circuit?.

Thanks and Regards-

Adarsha K

over 8 years ago

0 Amy Schnoor over 8 years ago

TI__Mastermind 18285 points

Adarsha,

This app note looks like it was created by a different group. I'm moving your post to the C5000 forum.

0 Lalindra Jayatilleke over 8 years ago

TI__Mastermind 30365 points

Adarsha,

Unfortunately, we don't have alot of details on the design background on this app note. However, looking over the guide you will notice that R11 and R12 are 0 ohm (See table 4 of the BOM) and part of the Bypass path for MIC_L_IN. Hope this helps.

Lali

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Digital stethoscope