Raspberry pi r2r dac

[ggetzoff]

Just saw this construction article posted by an MIT guy. Looks like a fun project!

24-Bit Stereo Audio DAC for Raspberry Pi - Hackster.io

Cheers,

Greg

 

[Mark Tillotson]

Interesting, but flawed in several ways Just the choice of opamp is startlingly ill-informed, being micropower and only specified to drive 5k load and above, and more than enough noise to drown out many LSBs.

But 0603 SMT resistors (type / tolerange unspecified) in the ladder? Driven from a CPLD? This is 12 bit territory, not 24!

 

[edbarx]

Interesting, but flawed in several ways Just the choice of opamp is startlingly ill-informed, being micropower and only specified to drive 5k load and above, and more than enough noise to drown out many LSBs.

But 0603 SMT resistors (type / tolerange unspecified) in the ladder? Driven from a CPLD? This is 12 bit territory, not 24!

For the Raspberry Pi, I am using the IQaudIO i2s DAC Pro. Needless to state, it sounds very realistic.