[time-nuts] Low noise powersupplies

Tom Van Baak tvb at LeapSecond.com
Thu Aug 7 06:35:21 EDT 2014


Ole,

Thanks for bringing it to our attention.
For those that like to click instead of search:

http://www.ti.com/tool/TPS7A4701EVM-094
http://www.ti.com/lit/ug/slvu741a/slvu741a.pdf
http://www.ti.com/product/tps7a4701
http://www.ti.com/lit/ds/symlink/tps7a4701.pdf

/tvb

----- Original Message ----- 
From: "Ole Petter Ronningen" <olepr01 at gmail.com>
To: <time-nuts at febo.com>
Sent: Wednesday, August 06, 2014 11:38 PM
Subject: [time-nuts] Low noise powersupplies


> Hello, all
> 
> I thought it may be of interest to some of the members of this list that TI
> is selling evaluation modules for some ultra low noise regulators for $20
> in their estore, shipping world wide included. The specs looks pretty
> decent to me, and I've ordered up a couple of boards to use as "clean up
> boxes" for my bench-supplies, to use on noise-sensitive projects.
> 
> 1.4-30v output TPS7A4701EVM-094
> 3.5µVRMS (10Hz, 100KHz)
> <25 nV/√Hz (10Hz, 1MHz)
> Maximum Output Current of 1A
> 
> +-15v version TPS7A30-49EVM-567:
> 15v rail:
> Noise:
> 12.7µVRMS (20Hz to 20kHz)
> 15.4µVRMS (10Hz to 100kHz)
> Power-Supply Ripple Rejection:
> 72dB (120Hz)
> ≥ 52dB (10Hz to 400kHz)
> Maximum Output Current: 150mA
> 
> 
> -15v rail:
> Noise:
> 14µVRMS (20Hz to 20kHz)
> 15.1µVRMS (10Hz to 100kHz)
> Power-Supply Ripple Rejection:
> 72dB (120Hz)
> ≥ 55dB (10Hz to 700kHz)
> Maximum Output Current: 200mA
> 
> Ole





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