Raspberry pi r2r dac

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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!
 
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.
 
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