It is digital. Hence it goes to the inputs of DAC to give out analog signals.
Ahaha Miro, you fall in love with uf-l connections now ? 🤣
👍
For our PCMs proto,it could be a good tool to swap from a DAC to another one (near pcb) with just a jumper on the board for listening test purpose ?
👍
For our PCMs proto,it could be a good tool to swap from a DAC to another one (near pcb) with just a jumper on the board for listening test purpose ?
I installed jumpers in j1 j13 but now am (re) reading that for an external psu it should be either 2r2 or 3r3 throughout? Correct?
@voxxonline Are you going to use PSU2? You can let jumpers installed and solder these resistors directly on wires (for positive and negative) and hide it into shrink tube 🙂
@diyiggy Not so sure that I fell in love with uf.l, but if it's about testing low jitter and stay modular, uf.l is optimal for that 🙂
@Michelag PCM is pulse code modulation ... in context of this type of DACs it means just specific data format, here is best explanation I found:
https://ccrma.stanford.edu/~jos/st/Pulse_Code_Modulation_PCM.html
https://ccrma.stanford.edu/~jos/st/Pulse_Code_Modulation_PCM.html
For that case you are not installing these resistors 😊
Exactly this will be challenging, I will make the first prototype by hand and test it 🙂 It can be easily tested also on the classic CPLD from aliexpress. The oscillators probably must have specific PCB with regulator 🤣
Here is CLK 2, 3, 4 and GND ... External oscillators can be connected here and configured in Quartus - Pin Configuration for relevant pins from schematic ... and reconfigure all pins ... easy - regulator and capacitor can be THT == almost THT solution 🤣
Attachments
Hi,
Has anyone heard significant difference between a shunt PS or a linear one on the digital 5V of AD1862 (or else dac chips) ?
Thanks
Has anyone heard significant difference between a shunt PS or a linear one on the digital 5V of AD1862 (or else dac chips) ?
Thanks
For -18VDC?
R1=270K
R2=12K
R3=400K
R4=2K
TR=200K
For +18VDC?
R1=5k2
R2=330R
R3=30k
R4=2K
TR=50k
Regards,
Dan
AD811 at present, original SEN previously.
A couple caveats: AD1862 not on official board but on my 2 layer interpretation. SEN on a proto board.
It is by far the best sounding NOS dac i've had in my system. Previous attempts around Ryan's 1541 D3 topology have not impressed me much (again non official board).
A couple caveats: AD1862 not on official board but on my 2 layer interpretation. SEN on a proto board.
It is by far the best sounding NOS dac i've had in my system. Previous attempts around Ryan's 1541 D3 topology have not impressed me much (again non official board).
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@dan
These values are correct. Please note, that maximum allowed input voltage for LT1963 is 20V, better if you do not exceed 19V 🙂
These values are correct. Please note, that maximum allowed input voltage for LT1963 is 20V, better if you do not exceed 19V 🙂
Thanks for the heads up. That could've been
😵 I wonder if I can just squeak by with Power Transformer ?
I'm looking for +/-18VDC for Abraxalito's Dark I/V. I thought your mini PS would be perfect.
Regards,
Dan
Curious if you tried opa861, cascoded CEN and also Segios 's Bjt I/V ?
DC coupled or AC coupled ? What, briefly, do you liked more VS the SEN ? I don't want measurements, your words will suffice 😊
For jls usb side I need to drop the voltage to 4. Is there any way to do it with the same 1085 ldo or should I look for a 4V alternative?