Monday, December 4, 2017

Second order from OurPCB - working on mistakes

Tonight after yet another hiccup by DHL I've finally received a second revision of my Artix board. This time to my eye the boards came out with even better quality. Judge for yourself.

Scan of the board's front side
Scan of the board's back side
The only visible change in revision 2 is presence of termination resistor under DDR3 module for the clock line.

FPGA footprint

FPGA footprint
DDR3 module footprint

DDR3 module footprint

DDR3 module footprint
FTDI FT601 USB 3.0 to FIFO bridge (0.4 mm pitch QFN)

FTDI FT601 USB 3.0 to FIFO bridge (0.4 mm pitch QFN)
Main PMIC (TI's TPS65400, 0.5 mm pitch QFN)

Main PMIC (TI's TPS65400, 0.5 mm pitch QFN)
12 to 5 V DC-DC converter (TI's TLV62130, 0.5 mm pitch QFN)

12 to 5 V DC-DC converter (TI's TLV62130, 0.5 mm pitch QFN)
0.5 mm pitch FRC connector (left), 0804 termination resistor arrays (right)

0.5 mm pitch FRC connector (left), 0804 termination resistor arrays (right)
HDMI connector footprint (diff pairs are visible)

HDMI connector footprint (diff pairs are visible)
SPI Flash footprint
Exposed backplate under main PMIC IC

Exposed backplate under 12-5V DC-DC converter

Exposed backplate under 12-5V DC-DC converter
Back side of DDR3 module with new footprint for termination resistor
Decoupling capacitors under FPGA (0201 and 0402 footprints are visible)

Decoupling capacitors under FPGA (0201 and 0402 footprints are visible)
Microsection

Microsection
Microphoto showing thru-hole plating

Microphoto showing thru-hole plating

Microphoto showing thru-hole plating

Can't wait to assemble the board to see if it will actually work!