I'm starting a project that consists of a simple embedded 16-bit PCM audio player, where no actual DSP takes place, only plays PCM and outputs something you can then amplify. I am currently searching for my DAC IC, and I'm hesitating between these two references from Texas Instruments :
- The DAC7642, a "non-audio" applications-oriented R-2R DAC, parallel data input.
- The PCM1773, an audio-applications-oriented sigma-delta DAC, serial data input
The thing is, even though the DAC7642 isn't meant for actual audio applications but rather for industrial/motor control applications, it uses the R-2R architecture which I highly prefer over the Sigma-Delta one, and it has parallel data input which I find way more convenient than the PCM1773's serial data input.
My question is: Are there any big drawbacks that should prevent me from using the DAC7642 as an audio DAC (Increased noise in audio output? Mediocre performance at clock rates needed by audio to output analog voltages at rates like 44.1 kHz?) Or can I just go with it and forget about the PCM1773?