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K

kp93300

Member
Joined 2007
assembly

kp93300 said:
I have the isolator in hand and would like to know the orientation of the texas isolator before soldering.
I only using it as isolator between the amanero combo converter and the BII dac
Please see the attached

1)Is the isolator orientation correct ?
2) The arrows point to the isolated BC ( bit clock )output?
3) The corresponding pin on the left side of the image corresspond to the BC input ?
4) Where to apply the dc voltage in ?
thanks

kp93300
Click to expand...

Any help to is much appreciated
thanks

kp93300
 

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Last edited:
qusp

qusp

Member
Joined 2009
kp93300 said:
Any help to is much appreciated
thanks

kp93300
Click to expand...

I guess nobody is going to support the free board...

the bar on the board pattern for the parts (indicated on the pic on first post of this thread) indicates the side that will be pin 1 and 16, as is the standard. pin 1 is indicated by the dot on the isolator

326215d1359096316-30-free-amanero-isolator-bare-pcbs-winxp.jpg
 
Last edited:
R

rade95

Member
Joined 2010
Why did this thread seize with qusp departure? Has anyone actually finished the board build up? I just got my boards (9018 and USB) and I am starting the build. KlipschKid thanks for the BoM. Any news on the build progress KlipschKid and glt? Guys your contributions are greatly appreciated by a ES9018 newbie like me. I built a TP OPUS so far thats it so this is a new exciting adventure for me.
 
R

rade95

Member
Joined 2010
I am still puzzled and confused with some of the postings: glt you are talking about a need for 1.2V supply, in addition to 3.3V AVCC and 3.3V DVCC. However I don't see a need for a 1.2V regulator for a v2 board. I just got my v2 board and it has AVCC, DVCC and additional 3 pins marked +12, GND and -12V. I don't get it why does this board require +-12V PS? I am yet to figure out where to source AVCC power supply. For +-12V (if really needed) I will use a TP Placid bipolar PS and for DVCC 3.3V I will use ADP7104 eval board. Any recommendations for AVCC 3.3V regulator?
 
D

diyinhk

Member
Joined 2012
there are limitless possibility, I hope everybody can share their experience and modification to the others

there are still many free pcb to go! All are welcome
Please remember to left the needed qty(1or2) in the paypal payment notes, of 1 will be shipped in default. happy diying to all:)
 
K

kp93300

Member
Joined 2007
This is my build of the board with iso7240 from texas.
I test it just now.
The input of the isolator has 3.3V supply from the amanero board . It measure about 3.2 on the isolator board. The output of the isolator has a 4.8V power from another source. The amanero usb i2s board is powered from the usb input itself.
There is sound but music is very soft with very prominent background hiss that correspond to the volume pot.

what are the likely problems ?
I appreciate input from more able diyers .
thanks

kp93300
 

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