Are R2R DACs inherently better?

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#41
Not really, it is just about what it cost and what it profits at the end. Pretty simple. They all prefered to make junk that is cheap for mass markett with rise of th global income in mind. They eventually gave their Know HOW abroad and now they cry while all the heads live comfortable in Switzerland.
 
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#42
rfbrw said:
It is a little more complicated than that.
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Please explain!!!! Dividends in France have exploded....
Food is becoming disgusting...Cars are dying at 80,000 km,
Health is becoming a luxury and so on....

I work in a small electronics company...
I earn just a little more than the French minimum wage....But I am happy to give a second life to all these cards and objects....And of course my job annoys the capitalist shareholders who advocate renewal....To the detriment of the planet and future generations!
 
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#44
diyiggy said:
I must be deaf but I find the AD1862 better sounding than the PCM1704. The PCM1702 was on the ligth side of the sound, one could like that or not according tastes, hifi setup around.
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Certainly, I have a good memory of the Burr-Brown PCM1795.... Very warm sound, good resolution very close to the AKM chips...And much better than the sabre chips (to my ears).
I would like to try all these chips...But I have at least 3 dacs to finish, and 4 amps! 😀 😀 😀
 
#49
tomchr said:
"eTrim is done during test"... Yeah... Maybe. Or maybe it works like laser fuse trim where dice on a wafer are tested at one station, sent elsewhere for trim, and then retested. So now you're dealing with three insertions, which means you have to worry about bond pads wearing out from repeated probe hits.
I've not worked on a product that had eTrim. Only laser fuse trim. Maybe eTrim is a more efficient process.
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Please read TI's app note: https://www.ti.com/lit/sbot037

tomchr said:
There's also the question of why. Why spend money developing an expensive R2R DAC when you can get better performance with a delta-sigma DAC? The PCM1704 is a nice R2R DAC, but easily beat on many specs by the PCM1792, which isn't exactly new either. There needs to be a solid business reason for TI to pursue another R2R DAC and "R2R DACs make me feel all warm and fuzzy inside" is not a good business reason. But hey... That leaves a small hole in the market that a small manufacturer like yourself can go and fill. So good on ya for doing that! 🙂

Tom
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I don't know about you, but I don't listen with a distortion analyzer.... Once THD is below 0.01%, I'm happy. But then there is marketing....
 
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#51
soekris said:
Once THD is below 0.01%, I'm happy. But then there is marketing....
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Not only.
THD is also very important.

And another aspect - DAC's ENOB and digital volume control.

0.01% is just 13 bit ENOB!

With 16 bit record and DAC with ENOB 20bit (which is close to the maximum achievable for the modern DACs) , we have 4 bit for volume, or 24dB attenuation.
With all respect, but you DAC have ~13-14 bit ENOB.
Maybe this is enough to listen at full volume, but what will be after -20dB digital attenuation? 9-10 bits?
Back to Covox?

Alex.
 
#53
altor said:
Not only.
THD is also very important.

And another aspect - DAC's ENOB and digital volume control.

0.01% is just 13 bit ENOB!

With 16 bit record and DAC with ENOB 20bit (which is close to the maximum achievable for the modern DACs) , we have 4 bit for volume, or 24dB attenuation.
With all respect, but you DAC have ~13-14 bit ENOB.
Maybe this is enough to listen at full volume, but what will be after -20dB digital attenuation? 9-10 bits?
Back to Covox?

Alex.
Click to expand...

Sign Magnitude....
 
#55
jean-paul said:
Yes the electric shavers are their prime (consumer) product. Still made in the Netherlands too.
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I have a rechargeable Philips shaver bought for travelling in 1992; 'Made in Holland'. It still works perfectly and is used once a week on average when I can't be bothered using water and a blade. The blades have never been replaced but I've replaced the NiCad battery twice. It's now in the 'sentimental asset' category...
 
#56
Bruno told me he still keeps a strip of these comparators as a relic. It's one of the last Philips audio ICs:

1733948653333.png
 
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