Hi all,
My customer will have a project using PCM1773 and LM4804. PCM1773 need a LPF and LM4804 has an HPF in front. Can we redsign a new filter to combine the two RC circuits (band pass?) and any suggesting for my customer? Thanks for your kindly help.
Best regards,
Gary Teng
Hi Gary,
You can use the suggested circuits/components and use only one pair of AC coupling capacitors, I would suggest to use the input coupling capacitors for LM4808. Below capture shows a suggestion.
Regarding the LPF at the output you can use R=100 and C=0.047uF for ~30kHz cutoff frequency.
Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators
