At 12:39 PM 29/09/2011, you wrote:

>Thoughts?

ASICs can have extremely asymmetrical dimensions- consider the drivers
for active matrix LCD displays.

Minimum width of a chip will vary by maker, but figure maybe 0.25mm
margins, so you should be able to get a reasonable active area on a
chip 1.5mm wide. Distribute some flip chip pads on the underside
and it should be do-able. Presumably you will need insulation or
clearance on the edges so it can't short to the tube. AFAIR, there's
typically metal at the chip edges to prevent crack propagation into
the active area.

Conventional components are a lot more practical with a 1/4" (6mm)
OD tube. 2mm OD is.. tiny. Good luck with this, and hope there is
some budget- I think you're going to be needing to use it.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the rewar=
d"
speff@interlog.com             Info for manufacturers: http://www.trexon.co=
m
Embedded software/hardware/analog  Info for designers:  http://www.speff.co=
m



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