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buffer fail ! solution in video

A project log for Multichannel Audio DSP Field Mixer Recorder

bluetooth app controlled professional portable DSP mixer.balanced audio IO,phantom power,flexible routing,ISO recording. timcode. AVB audio.

ben bilesben biles 06/21/2021 at 03:310 Comments

hopefully final video update. The filter is for half mclk frequency of 12.288 ( 6.144mhz ) 

some interesting notes on buffer filtering for ADC here..

https://www.ti.com/lit/an/sboa114/sboa114.pdf?ts=1625582064839

I was looking at frequency ranges just above audio but the filters job is to cutoff anything from 6mhz and higher ! 

update simulation using opa1637 as the preamp buffer to ADC.

better results in simulation at least.

Why I can't use the OPA1632 to attenuate the PG2500 with +/-5v power rails

OPA1602 attenuation and low 6mhz low pass filter


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