universal chip pre-amp project

[will_raymo2000]

Put me down for Beta testing this board as well. Looks very exciting!

[digi01]

Originally posted by tent


sounds interesting.. would you be able to provide pcbs?

tent:wq

Originally posted by will_raymo2000
Put me down for Beta testing this board as well. Looks very exciting!

Yes,i would like provide pcbs.i have sent the UCP_v0.1 cam file to the pcb house.

P.S.
for a completed design.i have no idea about the power supply part.i will try standard fix regulated psu or batteries.
i think DC detection,RF filtering is useful function too.thanks A.T.
i do not like dc servo,it is too technical,short of human interest.

zang

[digi01]

Atilla,
for you information,the attached is a original pcb work of ucp_v0.2.i use smt resistors.

[digi01]

bottom layer

[digi01]

top layer

[peranders]

Nice work but have you checked the trace width of the output? Very thin. I would also make the solution more compact. Put the buffer closer to the opamp.

[digi01]

here is smt version of ucp_v0.1,all resistors is 0805 packaged.
it is very compact very simple.pcb size is 40mm x 40mm.

have fun

[digi01]

bottom layer

[peranders]

Where did the buffer go?

I would recommend you have to have more isolation between the screwholes and the groundplane.

Strive to have all SMD parts on the upper side, more practical.

Have the main groundplane on the solderside but you can also have groundplane on the top side but it will hardly be a better ground but it looks nice.

The hot relief pads for the connectors have very thing traces. You can have fatter hot relief at some pads you know. The ground connections could be better and you could also tune the pads size. I think they look rather big right now.

[digi01]

Originally posted by peranders
Nice work but have you checked the trace width of the output? Very thin. I would also make the solution more compact. Put the buffer closer to the opamp.

P-A,
thanks for the comment.i use 20mil width track in the signal route.it is a decent value.

Originally posted by peranders
Where did the buffer go?

P-A,
there are two design.the basical design(ucp_v0.1) is simple 2 dual opamp.the other design(ucp_0.2) is opamp gain stage with LME49600 buffer output.

Zang