Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Update:
Last week I was finally able to test the board and it works!
Picture here:
The board was done by JLCPCB, who also soldered the passives.
A local shop soldered the ICs (hence the melted U4 on the top left).
Just posted back to say thanks for all the help!
I ended up going for a four-layer design.
The stackup is:
- Layer 1 (F_Cu): Signal 1
- Layer 2 (In1_Cu): GND
- Layer 3 (In2_Cu): Power
- Layer 4 (B_Cu): Signal 2
I used the 7628 prepreg from JLC PCB ((https://cart.jlcpcb.com/impedance)']https://cart.jlcpcb.com/impedance).
Layers 2 and 3 are...
Sorry I was talking about clearance. Yes, trace length is about 15 mm.
As long as the lack of them won't bring much trouble while soldering, I'm up for removing them then.
I did not.
The oscillator generates an LVDS square wave, so the rise time is at least 200 ps.
So the TEL (Transition...
The capacitors are around 60 mil (1.5 mm) vertical and 40 mil (1 mm) horizontal apart and JLCPCB recommends at least 40 mil between 0402 and QFN components.
As for the layout, I based it on the one in the datasheet (see attached).
Did I do something wrong? I guess I could move them so they are...
I've designed a PCB and was looking for some review and advice. The images are attached to this post.
The board is for an up/down frequency converter. Specifically, from 0-300 kHz to 400 MHz.
It's a simple design, the input signal gets multiplied by a 400 MHz square-wave (X1) by a mixer (U6 or...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
