i want a compact ,high performance usb dac for my laptop and searched for some diy model on web.and then i noticed gamma-1 project, it's really good for me,but not simple enough to me,as i just needed a usd-dac without any other input and function.so i start my plan , simplifying gamma-1 lite version, to make it even more "liter":
1.pick out the receiver,spdif converter, parts and relevant components
2.delete wallwart supply part and the switch of choosing supply between usb and wallwart,as i want a purely usb-powered dac,as well as the AND gate ic.
3.add a LMH6642 to buffer the VMID of wm8501 in order to get rip of large caps. i also intent to make it slimmer,fully using SMD component.
the follow pic is my first try schematic,there is an error that symbol "func4" should be "func0". i didn't know if there is some other mistake.
1.pick out the receiver,spdif converter, parts and relevant components
2.delete wallwart supply part and the switch of choosing supply between usb and wallwart,as i want a purely usb-powered dac,as well as the AND gate ic.
3.add a LMH6642 to buffer the VMID of wm8501 in order to get rip of large caps. i also intent to make it slimmer,fully using SMD component.
the follow pic is my first try schematic,there is an error that symbol "func4" should be "func0". i didn't know if there is some other mistake.
