[time-nuts] Linear voltage regulator hints...

Dan Kemppainen dan at irtelemetrics.com
Mon Dec 8 13:18:16 EST 2014


In playing with some oscillators and a GPSDO here, I think I'm seeing a 
voltage sensitivity issue.

So, I started looking at the output voltage of various regulators vs. 
temp. Using standard LM/UA type linear regulators and some LDO's, they 
all appear to be pretty sensitive to temperature. (millivolt / few 
degrees Fahrenheit sort of sensitivity). Most of the datasheets seem to 
ignore temp sensitivity. Almost like they are so bad they don't want to 
publish it...

Does anyone have hints on TO-220 or D-Pak type regulators that have 
really good temp coefficients and good line regulation? A few PPM/Deg C 
might be nice, if possible. Or am I into a 'roll you own' type design...


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