For me, this looks like a advertisement campaign only. Not very
sophisticated or ingenious. Read that you don't need LC-filters at the
output because of the LDOs. *lol* If the designer ever heard of corner
frequency??
And the ISL9000A is the same.
- Henry
--
ehydra.dyndns.info
David C. Partridge schrieb:
Hmmmm I wasn't impressed. The 'scope screen shot of noise levels on the outputs used 20mV/division, and the thickness of the regulated traces told us precisely nothing. Now if the author had measured 20uV noise over a BW of 10Hz to 100kHz (about 63nV/rtHz), or 3uV over the same BW (about 10nV/rtHz), I'd have started to get interested.
However as no claims were made, I took the title of "Ultra-Low Noise" with a large shovel of salt.
Regards,
David Partridge
-----Original Message-----
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of ewkeh...@aol.com
Sent: 08 March 2011 21:41
To: time-nuts@febo.com
Subject: [time-nuts] Low noise power supply
There is an interesting article in the March 2011 Electronic Products magazine
"design an ultra low noise supply for analog circuits. It is a combination of
switcher and LDO's and written by P Hunter TI so it may also be available on their
site.
Bert Kehren
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