---
# System prepended metadata

title: Design Beam Test 3 Board
tags: [Design, DeWei]

---

## Outline
* ![all](https://hackmd.io/_uploads/H1fJ2UEsR.png)

## Changed of sub-board
* ![amp-dac](https://hackmd.io/_uploads/H1Ee3L4oC.png)
* Photodiode: [FR00AVAR](https://fiberfin.com/custom/upload/File-1535472897.pdf)
	* Verticla version
* [USB-3.0-A](https://en.wikipedia.org/wiki/USB_3.0#Connectors)
	* Reasons: Lots of port removed in ver.2
		* GPIO(\*4), reverse-bias(\*1)

## Main Board
* PWR
	* 12V -> 5VA
		* [MDS02M-05N](https://www.mouser.tw/ProductDetail/MEAN-WELL/MDS02M-05N?qs=ZcfC38r4PovzvUfVLFtf4g%3D%3D)
		* [MDS01M-05N](https://www.mouser.tw/ProductDetail/MEAN-WELL/MDS01M-05N?qs=ZcfC38r4Potp5oBopGq3ww%3D%3D)
	* 12V -> 5VD
		* [MDS20A-05](https://www.mouser.tw/ProductDetail/MEAN-WELL/MDS20A-05?qs=OlC7AqGiEDmNZVeaqbgsyg%3D%3D)


## Long trace of SPI
[TIDA-060017: Transmitting SPI Signals Over LVDS Interface Reference Design](https://www.ti.com/lit/ug/tidued8/tidued8.pdf?ts=1724309604926)