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DAC WITH tda1543                               
April , 2007
 


 
INTRODUCTION

I never forgot the project of Ryohei Kusunok seen on MJ magazine many years ago about a simple DAC using four Philips TD1543.

Here is presented a very similar design and it is very easy and cheap to create using a DIY kit get from http://us.hifidiy.net/ at a very low price:


This design use the CS8414 as digital input receivera and 4 pcs of TDA1543 in parallel.

The output stage with 2 x OPA604 is not used and the resampler rate as been disabled to get the best sound.

The complete schematic for this DAC can be download here and in this is very easy to understand that the output signal quality depend on the 500 ohm resistor on the DAC chip output with the function of I/V (current to voltage) converter.




Follows a measurement set of the signal before of any output stage get by Clio system on output to the DAC chips and driving the input signal with the SPDIF output of the USB audio interface Audiophile USB by M-Audio.

In all these measurement I see a perfect and linear distortion spectrum decay and very low distortion level.

LEFT



RIGHT




MLS

BAD RESULT WITH RESAMPLER INSERTED