On Mon, 6 Dec 2004, Harold Hallikainen wrote:

> That's what I'm afraid of! Our board is all set for LM324. We generally do
> a 0-10V output, but we've got a customer that wants 0-45. Discrete
> components on 48 outputs on a board not designed for those components will
> be fun!

DMX ? Can you find out if the user can tolerate current sinking instead of 
voltage outputs ? Or look into single ended drive and pullup resistors ? 
Some open collector drivers go beyond 50V (uln2003 is 50V) and it is easy 
to put them in a feedback loop to include the opamp that drives them. Then 
add a pullup and you have hv drive. I would think about a daughterboard 
with 6x uln2003 and pullup and feedback resistors to the main board. And 
someone has to pay for this I suppose.

Peter
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