1958 Turntable from the Black Forest - 17: Audio Sampling with 16-bit ADC ADS8343/challenges-projects/design-challenges/enchanted-objects/b/blog/posts/1958-turntable-from-the-black-forest---17-audio-sampling-with-16-bit-adc-ads8343I&#39;m continuing with the scope creep exercise.As a preparation to make my Analog Shield talk to the SAMA5D4, I&#39;ve been testing the on-board ADC functionality.I&#39;ve also measured the AC and DC signal path from signal source to ADC chip in. Th...en-USTelligent Community 12RE: 1958 Turntable from the Black Forest - 17: Audio Sampling with 16-bit ADC ADS8343https://community.element14.com/challenges-projects/design-challenges/enchanted-objects/b/blog/posts/1958-turntable-from-the-black-forest---17-audio-sampling-with-16-bit-adc-ads8343Sat, 16 May 2015 09:21:20 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:33a33bf6-53ed-4766-8587-b33c61f94ab1Jan Cumps0<p>Consistency isn&#39;t my strongest point these days <span>[View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-33a33bf6-53ed-4766-8587-b33c61f94ab1/0523.contentimage_5F00_1.png:16:16]</span>.</p><p>I think that I can&#39;t just use the analog shield with the SAMA5D4:</p><p>&nbsp;</p><p><span>[View:/resized-image/__size/703x528/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-33a33bf6-53ed-4766-8587-b33c61f94ab1/6470.contentimage_5F00_179257.png:703:528]</span></p><p>&nbsp;</p><p>I have a self-made level shifter. I might use that...</p><p><span>[View:/resized-image/__size/620x465/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-33a33bf6-53ed-4766-8587-b33c61f94ab1/4336.contentimage_5F00_179258.jpg:620:465]</span></p><img src="https://community.element14.com/aggbug?PostID=20844&AppID=117&AppType=Weblog&ContentType=0" width="1" height="1">RE: 1958 Turntable from the Black Forest - 17: Audio Sampling with 16-bit ADC ADS8343https://community.element14.com/challenges-projects/design-challenges/enchanted-objects/b/blog/posts/1958-turntable-from-the-black-forest---17-audio-sampling-with-16-bit-adc-ads8343Sat, 16 May 2015 09:18:33 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:33a33bf6-53ed-4766-8587-b33c61f94ab1Workshopshed1<p>What&#39;s the purpose of C1 on the input op amp? Does it vary the gain by frequency?</p><img src="https://community.element14.com/aggbug?PostID=20844&AppID=117&AppType=Weblog&ContentType=0" width="1" height="1">