Hi All,
Take a look on the low noise 1.5A LDO regulator LT1963 and 500 mA LT1763.
Voltage regulation depend on how good is the circuit behaviour with respect
to Noise, PSRR, Line regulation and Load regulation. For instance some LT
regulators like LT1117, 1085 and 1086 have < 1% of Line and Load regulation
but have worst noise specs than LT1963, LT1763, MCP1825, MCP1826.
Regards,
Vasco Soares
----- Original Message -----
From: "Dan Kemppainen" <d...@irtelemetrics.com>
To: <time-nuts@febo.com>
Sent: Tuesday, December 09, 2014 4:57 PM
Subject: Re: [time-nuts] Linear voltage regulator hints...
Hi All,
Thanks for the responses. I had a feeling the answer wouldn't be good, but
was hoping someone would have a suggestion. There are currently a bunch of
regulators in the 'system'. If there were some really good regulator out
there, the shotgun approach would apply...
Of course it is difficult to provide a good reference and pass transistor
on the same die, but it was worth asking.
Bert,
The thought of temp control of the regulators crossed my mind. Not
planning on going there unless I need to. But it was a thought, maybe if
all else fails...
Bob,
> There are more modern parts with lower close in noise. Linear
Technology has a number of them. Your filter caps take out the broadband
stuff, close in is all that really matters.
>
Got any hints on which ones? Maybe a nice quiet regulator can be
'disciplined' with a better reference.
Thanks,
Dan
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