[time-nuts] Low noise powersupplies

[David Hooke]

Such as?

david

On 7/08/2014 9:30 PM, bruce-CPdLzquO8hwAvxtiuMwx3w at public.gmane.org wrote:
> I have a couple of these. however their noise spectral density tends
>   to rise precipitously below 1Hz or so. There  are regulators with significantly
> lower flicker noise.
>
> Bruce
>
>
>> On August 7, 2014 at 6:35 AM Tom Van Baak <tvb at LeapSecond.com> wrote:
>>
>>
>> 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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