jlarkin@highlandsniptechnology.com wrote:
I got the first assembled board and it works! Rev A! First try!
The uZed is running Linux and blinking an LED.
https://www.dropbox.com/sh/hgetmk27k96sbza/AABuHr8llUYHjj_6b3yZGmT0a?dl=0
Congratulations.
We\'re in the midst of figuring out why the first-silicon bathymetric
lidar chips we\'ve been evaluating don\'t seem to work. (They aren\'t
really our design, but we\'ve been kibitzing a lot since the very
beginning, so we\'ve had a a fair amount of input.)
Looks like the silicon vendor\'s models for their brand-new integrated
APD designs aren\'t up to snuff. The IC designer\'s simulations look
fine, of course. In any event, we have these 20V APDs that we can\'t
bias above two diode drops because something else starts sucking a lot
of current.
Razza fraza %&$@#&*!!
However, as Mehitabel used to say at such times, \"Toujours gai, toujours
gai.\"
Cheers
Phil Hobbs
On Thu, 30 Jun 2022 16:23:25 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
jlarkin@highlandsniptechnology.com wrote:
I got the first assembled board and it works! Rev A! First try!
The uZed is running Linux and blinking an LED.
https://www.dropbox.com/sh/hgetmk27k96sbza/AABuHr8llUYHjj_6b3yZGmT0a?dl=0
Congratulations.
We\'re in the midst of figuring out why the first-silicon
bathymetric lidar chips we\'ve been evaluating don\'t seem to work.
(They aren\'t really our design, but we\'ve been kibitzing a lot
since the very beginning, so we\'ve had a a fair amount of input.)
Looks like the silicon vendor\'s models for their brand-new
integrated APD designs aren\'t up to snuff. The IC designer\'s
simulations look fine, of course. In any event, we have these 20V
APDs that we can\'t bias above two diode drops because something
else starts sucking a lot of current.
Razza fraza %&$@#&*!!
However, as Mehitabel used to say at such times, \"Toujours gai,
toujours gai.\"
1.2 volts sounds a bit low for avalanche breakdown.