[sdiy] uA726 transistor array

[jhaible]

> A couple of years ago I ask the app engineer at That about using their
> transistor arrays in a heated expo converter. He said that heating the
chip
> would create thermal issues which would make their chip unusuable in an
expo
> circuit. Can't remember if it was thermal noise or what.
>
> Would there be issues like that for other transistor arrays?


Depends on which temperature you're heating the chip.

Generally, higher temperature means the chip will be aging faster,
have more leakage and so on.
BUT any decent chip should be specified for a temp range of
0 deg C to 70 deg C at least, so I question the "unusable" statement
if you heat it to 50 or 55 deg for instance.
Maybe the app engineer had much higher temperatures in mind
when you talked about heating?

OTOH why heat the chip, when tempco resistors are available?

JH.