Please advise DC/CD converter with optron isolation

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Please advise DC/CD converter with optron isolation and the following properties:
- 5V input
- fixed 3,3V 1A output
- low ripple ~ 1 mV
 

Re: Please advise DC/CD converter with optoelectronic isolat

Doesn't matter which one you will use, they will all have ripple more than 10+ mV. It is up to you to provide LC-filtration right next to DC/DC converter.
 

Re: Please advise DC/CD converter with optoelectronic isolat

According to its datasheet even LINEAR REGULATOR TexasInstruments TPS78633
has Ultralow Noise (48 µVRMS ) and high power supply ripple rejection ratio, but mostly below 1Mhz.

Since I need +3,3V to power video ADC/DAC, then to understand if this IC is suitable - I need to know the +5V PC Power Supply ripple/noise spectrum.

If it is mostly below 1Mhz, then TPS78633 seems to be acceptable.
 

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