matched tr's for vco etc

[danial stocks]

Several monolithic linear ic's available with matched transistors.. LM396? 
[I think] is a dual matched trans in a metal 6 lead TO100 style round can, 
or cheaper still are the CA3046, CA3086 etc which are 5 matched tr's in a 14 
pin dip.. These should offer better results as all the transistors are on 
the same block of silicon and so inherently temp. matched already.. Also the 
mask etch IC mfr process should give a closer match than the 'dual 
transistor' which usually consists of 2 selected matched transistor chips 
mounted in a common package.. I've used a LM396 in a tri - sin converter 
with good results..

Also, can anyone out there suggest a good site to find some valve VCO and 
VCF designs? [only just got on the list you see]

Dan


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