[hopeless]

I need it for one of my Super Pro's.

I want it to take advantage of the dedicated pin(s) of the CS4398 (see datasheet).


Can anyone please help? I'd be thankful! It can be either transistor or relay (powered with 12V) shunt muting for the L and R single-ended outputs of the DAC (placed after the buffer opamp & the DC blocking caps).

 

[guzzler]

Presumably you mean AMUTEC and BMUTEC (25 & 18 respectively)? Well, they're high when the chip is powering up, powering down, or there's an input error. This is a basic circuit to implement - have a look here to see if you can figure it out... As an even bigger hint, the circuit you need is actually on that page.

Post your suggestions, and we can go from there.

 

[hopeless]

Thanks! That's all that I needed (the formulas and the way to choose the transistor). I will study it

 

[hopeless]

I need that no more, because leaving the DAC on I've discovered that after 10 or 15 minutes the little pops (in the DAC where I've removed the muting circuit, my older, experimental Super Pro 707) have completely disappeared (while the somehow improved sound does not). Magical

P.S. Not that I'll do the same thing in the other one