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Old 22nd August 2005, 02:40 AM   #1
ALBQ is offline ALBQ  United States
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Join Date: Dec 2003
Location: Albuquerque
Default PGA2310 - Setup for highest audio quality

All,
I have started working on a new front-end for my pre-amp using a PGA2310 digitally controlled potentiometer. Question I have is, according to the design guide, Ti recommends adding an opamp to the input to match impedances for lowest distortion. There are a bunch of designs on the net without the opamp. What are people’s experience using the chip and what is your recommendation for highest audio quality? Attached is a picture of my test board w/o opamp driving headphones. Overall, my initial impressions are positive but, just started so still a work in progress
Thank you -ALBQ
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