My attempt:
LTZ1000-PCB Designed by Dr Frank and
LT1763-Low-Noise-Supply designed by Cellularmitosis
![](https://www.eevblog.com/forum/metrology/ultra-precision-reference-ltz1000/?action=dlattach;attach=528830;image)
Both PCBs are made available as OSHW by Cellularmitosis (big thanks
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif.pagespeed.ce._JElyJQqdB.gif)
) and can be bought here or via any other pcb-manufacturer with the gerber-files:
https://oshpark.com/shared_projects/dGYcQAgn LTZ-Board
https://oshpark.com/shared_projects/uVr4yDgz LT1763-Board
Why i did it that way:
LTZ1000 is directly buffered via LTC1052 since i dont use the 7->10V-function for the references at the moment,
LTZ1000 protected from airflow by green lemonjuice-cap,
an EMI-Filter BNX002-01 is used at the power supply input
https://www.murata.com/en-eu/api/pdfdownloadapi?cate=luNoiseSupprFilteBlockType&partno=BNX002-01, a double sided copper-clad-board at the pomona-jacks should equalize thermal differences pretty well,
the LT1763 is located further from the LTZ1000-PCB, so it doesnt affect it by temperature variation due to varying input voltage,
TEKO 393-case is afterwards stuffed again with paper towel shreds to reduce airflow,
Resistors by Edwin Pettis