Random Number Generation Circuits

[ElEctric_EyE]

Found a good app note from Maxim Integrated that explains a few things of interest, and it's a simple design that they do measurements on up to 100MHz although it is from 2005.

So maybe better products are available to improve the design for a lower operating voltage (i.e. 3.3V) and @ higher frequencies?

The AN says the higher voltage Zener diodes (14V+) work better than the lower voltage Zener diodes. Also the lower bias current (@10mA) was just as good as the higher current (@60mA). So maybe some simple voltage doublers, like on Garth's primer would be in order and we could have a working 3.3v circuit.