although I lurk around here for a long time and tried DIY some stuff, recently I discovered that I have a great knowledge deficit when it comes to electronics / schematics / PCB design, etc.... however I started to read educate myself in that direction. Sadly it is quite a lot information I gathered and difficult for me to handle. I realized that I have to start more or less from the bottom if I want to design stuff myself.
At the moment I am trying to design a power source schematic for my DAC chip (AD1955). That DAC needs 2 5v supplies (DVDD & AVDD) I know that there are some schematics already available using 9v batteries yet there are none with 3.7v batteries. However I want to do this with a Samsung Galaxy S battery (lots of them available for cheap). My question is: Can I use charge pump regulators to power the DAC?
I made a sketch (I am not so good yet in drawing schematics) of how I intend to solve this problem:
I know this is not much information I gave you, but there are lot of those regulator ICs available as option, I just do not know, if I am making a major mistake by doing this. I am reading stuff about this voltage-ripple that comes from ragulators => is this possibly relevant to SQ of a DAC?
Thank you very much for any input I get :D