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Low noise symmetrical PSU TPS7A4701 and TPS7A3301
Low noise symmetrical PSU TPS7A4701 and TPS7A3301
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Old 18th July 2018, 06:12 PM   #91
wealas is offline wealas
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He's, unfortunately, no longer active on this forum.
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Old 19th July 2018, 05:42 AM   #92
triode_al is offline triode_al  Netherlands
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Too bad.
I saw a nice TPS7A47 board on the Ali-market but I found no counterpart for the negative side.
So I am wondering where to get a soldered board?
Alternatively, I can place the unit on its back and solder directly on the chip. But its sure I will degrade somewhere and my way of working leads to suboptimalisation (like the story of an input inductor, or even an input capacitor that might just degrade the PSRR).
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Old 19th July 2018, 08:12 PM   #93
wealas is offline wealas
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Another member here sells dual polarity supplies at ldovr.com, also diyinhk.com has some.
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Old 3rd September 2018, 11:02 PM   #94
gigigirl is offline gigigirl
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Default Ebay find

Hi Guy's i found this unit on Ebay, has anyone tried it

TPS7A4700 Low Noise RF Power Supply Module 3V 3.3V 5V 12V 15V 1A Adjustable 699901905578 | eBay

I'm looking for a low noise 18 VDC output, to then feed a TLE2426CLP transistor to make a =/- 9 VDC supply for a phono amp

TLE2426CLP Integrated Circuit - CASE: TO92 - MAKE: Texas Instruments 5052406762261 | eBay


so I think this would maybe do

Cheers for now
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Old 3rd September 2018, 11:13 PM   #95
gigigirl is offline gigigirl
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Also with second thoughts, can these (the TPS7A4700) be used in series to further lower noise.?

Cheers
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