- Fri Sep 22, 2006 7:38 am
#19399
So far, I still don't know whether that's possible or not...
Philba wrote:I use a 100n bypass cap for each IC I use. I never combine them. It's cheap insurance against really hard to track down problems.Right. My specific concern here is that the reference design for the VS10XX family of MP3 decoders (available here) states that there should be a seperate 100n bypass cap on each supply pin. Since there are 10 supply pins (4 x CVDD, 3 x IOVDD, 3 x AVDD), that ends up taking a lot of space on the PCB. I had noticed that Sparfun's (Olimex's?) design for the VS1002 breakouts and dev boards that they had combined the caps into a single 10u cap for each signal, and wondered if this was a common practice. Since there is an additional signal (CVDD) on the vs1033, I was hoping to use this "capacitor merging" technique in my vs1033 design. I don't want to remove the bypass caps altogether, just want them to take less space on the board...
So far, I still don't know whether that's possible or not...