Thu May 29 18:41:43 EDT 2014
25 x CA3046 arrived
I hooked up the ref + osc to the matched differential pair. There is
some temperature sensitivity when touching the package but definitely
better than the ad-hoc thermal coupling gluing the backs of two TO-92
together with crazy glue. Now checking if there's drift once I leave
I did notice that at 2.5mA the V_BE was substantially higher: 750mV as
compared to 670mV for the 2N3904.
So time to move on to controlling the filter.