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DAC AD1862: Almost THT, I2S input, NOS, R-2R
DAC AD1862: Almost THT, I2S input, NOS, R-2R
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Old 21st January 2021, 12:04 PM   #1391
miro1360 is offline miro1360  Europe
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Expect this as "safe minimum" with LM6171 in the I/V:
+-40mA for digital (+-5V)
+-60mA for analog (+-12V)
The real consumption will be less (perhaps half of that).

Schematic examples in datasheet are for both "high performance" and "high resolution" on +-5V digital supply. I would say, the larger the voltage difference between analog and digital (analog > digital), the less the possibility of digital interference - but that's a humble theory unless we see the internal diagram of the AD1862
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Old 21st January 2021, 02:21 PM   #1392
jimk04 is offline jimk04  United Kingdom
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Good information thankyou
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Old 21st January 2021, 02:50 PM   #1393
Vunce is offline Vunce  United States
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DAC AD1862: Almost THT, I2S input, NOS, R-2R
Even with Burson discrete opamps installed I measured less than +/-60mA current draw on the 12v supply.
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Old 21st January 2021, 05:04 PM   #1394
miro1360 is offline miro1360  Europe
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Is not that perfect The low current consumption minimizes the demand on heatsinks in shunt regulators.
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Old 22nd January 2021, 04:35 PM   #1395
jimk04 is offline jimk04  United Kingdom
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Thanks for that.

And.....my chips have landed...along with a PCB


.and also a big Mouser order....woo hoo!
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Old 22nd January 2021, 04:38 PM   #1396
Paddy Garcia is online now Paddy Garcia  United States
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Sounds like a fun weekend ahead!
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Currently enjoying: miro's AD1862 DAC->Korg B-1->3e TPA3251->Kef 104/2
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Old 22nd January 2021, 04:39 PM   #1397
jimk04 is offline jimk04  United Kingdom
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Sorry this should have gone in the GB thread!
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Old 23rd January 2021, 08:46 AM   #1398
miro1360 is offline miro1360  Europe
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Why NOS DAC is better?
Because direct comparison often proved better sound. Some describe NOS-DACs as more vinyl-like in their sound. Oversampling DACs can sound a bit ringing, sometimes a bit muted or veiled.

If the oversampling has 8x multiplier, then only 1 out of 8 sampling points is the original record information, and the remaining 7 sampling points are derived from an interpolation calculation. How trusty are those 7 calculations? ... what about 32x multiplier
In complex frequencies/music sometimes less information is more, naturalness.
Just adding here my thoughts
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Old 28th January 2021, 05:23 PM   #1399
redjr is offline redjr  United States
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DAC AD1862: Almost THT, I2S input, NOS, R-2R
Quote:
Originally Posted by Vunce View Post
The Digital input selector based on the AK4118 chip arrived. It has SPDIF x4 + USB x1 inputs to I2S output with a screen that shows locked status and sampling rate. Works very nice! No pops/clicks when switching inputs either
Where did you pick up the input selector board? eBay? Link?
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Old 29th January 2021, 02:29 AM   #1400
redjr is offline redjr  United States
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DAC AD1862: Almost THT, I2S input, NOS, R-2R
Never mind Vunce. I read a little further and saw the link from Audiophonics.
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