On Fri, 21 Apr 2006 00:40:19 -0400, "jack"
wrote:

Tom --

If you didn't see the subsequent post -- the VRE305 used by Tipton has a
Temperature Out pin -- 630mV with a 2.1 mV/C coefficient. This could be
used with a transistor array to maintain a constant temperature for the
device.

Jack


The LT1019A Linear Technology chip that I played with has the same pin
to give a changing output as the junction temperature changes. However
LT says that it is pretty much useless for actual temperature
relationships. I took measurements with that pin and also found it to
not correlate with temperature close enough to do anything with other
than give an indication of change. I believe it is buried to far into
the junction.

73
Gary K4FMX