[sdiy] ARP VCO drift - update

[ASSI]

On Sonntag 17 August 2008, Steve Carter wrote:
> Even more confusing is that
> the BC847BS is a dual NPN package although that would be
> interesting to see if it performed as well as an SSM2210. At
> £0.05 each when you buy five from Farnells they have to be
> great value!

The thermal coupling will be alright, but the matching may not be 
so great as you expect.  These are always two dies in a single 
package, not monolithic pairs.  In some applications having two 
separate chips is actually an advantage.


Achim.
-- 
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