Re: An Improved Servo for the THAT1510 and THAT1512
Posted: Wed Feb 15, 2012 4:14 pm
A few uA of leakage sounds high, while the data sheet spec is even more than that, I don't recall it being that much or a problem in practice.
Regarding noise from that leakage, it is terminated by a couple hundred ohms of microphone at audio frequencies so rarely an issue. I recall exactly one production incident when a new model electrolytic cap, got flagged by the factory QA people for noise. My speculation is that, this cap manufacturer made their new improved part too small and cheap to work in that particular application.
So generally not a problem but there are problem parts out there so trust but verify.
JR
Regarding noise from that leakage, it is terminated by a couple hundred ohms of microphone at audio frequencies so rarely an issue. I recall exactly one production incident when a new model electrolytic cap, got flagged by the factory QA people for noise. My speculation is that, this cap manufacturer made their new improved part too small and cheap to work in that particular application.
So generally not a problem but there are problem parts out there so trust but verify.
JR