---
# System prepended metadata

title: Regular Meeting (2022.7.18)
tags: [Regular Meeting, DeWei]

---

# Regular Meeting (2022.7.18)

* Zybo-Z7
* FE-Fanout Board

## Zybo-Z7

Building image......

## FE-Fanout Board

* schedule
	* Design: ![](https://i.imgur.com/YAXtcol.png)
		* Finished: [OPA2674ID](https://www.ti.com/lit/ds/symlink/opa2674.pdf), LDOs
			* Stamp hole for OPA2674 and OPA3692 area
			* Change desing opa2674: 1:8 -> (1:4)\*2
				* Old: ![](https://i.imgur.com/8u0YU9y.png)
				* New: ![](https://i.imgur.com/Jea37ws.png)
				* sim new with Rf=600ohm: ![](https://i.imgur.com/qXOFphD.png)
				* sim new with Rf=700ohm: ![](https://i.imgur.com/Iqerk7p.png)
				* SMA as input(1), U.FL as output(8)
				* Power connector: [Euro style terminal block](https://www.wcon.com/5mm-euro-terminal-block/2070.html) 2pin\*2 (GND/+5V, GND/-5V)
		* Remained: [OPA3692ID](https://www.ti.com/lit/ds/symlink/opa3692.pdf)(fixed resistor/gain) 		
	* Layout: This week
* Unit test for single component (with SMD-DIP Board)
	* [MSOP](https://www.mouser.tw/ProductDetail/Chip-Quik/IPC0078?qs=gjT6naH6P5Jbla4MwzVsyg%3D%3D) we don't have 
* Components have been purchased and we expect to receive them in the next or in two week
	* OPA3692 \*10
	* OPA2674 \*10
	* U.FL connector \*40 
	* 2 LDOs: MPC1727, LT3015
* Does not purchas
	* Wire (fanout to prototype or fanout to scope)~10 pcs, 2 choice:
		* SMA(female) to u.fl(male)
			* Needs transfer, maybe loss
				* board -> u.fl -> sma -> sma -> bnc -> scope
				* SMA is more reliable(higher lifetime)
				* Also needs SMA(male) to u.fl(male) -> to prototype baord ~10 pcs
		* u.fl(male) to u.fl(male)
			* Scope: maybe use *probe* to measure
			* just 10 pcs
###### tags: `Regular Meeting` `DeWei`