Please advise DC/CD converter with optron isolation

[spktu]

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

 

[nicleo]

Please advise DC/CD converter with optoelectronic isolation

PK6-D5-S3.3
3.3W, 3.3V, 1000mA, single output, isolated DC-DC converter
http://www.cui.com/pdffiles/PK6_D5-S3.3.pdf

 

[IanP]

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.

 

[spktu]

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.

 

[mami_hacky]

Most recent LDO has the required attributes.