1 Topic by skstaff888 (edited by skstaff888 2019-06-06 08:31:48)

  • Registered: 2018-04-23
  • Posts: 8

Topic: Is ADI2DAC using TPS542951 as DC-DC converter?

What about the ripple voltage of this converter after LC filtering?
Can the ripple voltage reach down to uV level?
Can the ripple voltage affect the fs clock performance?

2 Reply by MC

  • MC
  • MC
  • Administrator
  • Offline
  • From: Germany/Thailand
  • Registered: 2007-04-06
  • Posts: 24,818

Re: Is ADI2DAC using TPS542951 as DC-DC converter?

skstaff888 wrote:

Is ADI2DAC using TPS542951 as DC-DC converter?

No. It uses a TPS54294, and this is not a DC-DC converter but an efficient step-down regulator. It provides the core voltages for the FPGA.

skstaff888 wrote:

What about the ripple voltage of this converter after LC filtering? Can the ripple voltage reach down to uV level?

None of this is relevant.

skstaff888 wrote:

Can the ripple voltage affect the fs clock performance?

No, it can't.

Regards
Matthias Carstens
RME

MC's Website

  • Registered: 2018-04-23
  • Posts: 8

Re: Is ADI2DAC using TPS542951 as DC-DC converter?

Thanks your reply.

4 Reply by skstaff888 (edited by skstaff888 2019-06-11 07:45:02)

  • Registered: 2018-04-23
  • Posts: 8

Re: Is ADI2DAC using TPS542951 as DC-DC converter?

Hello MC,
As you said the TPS54294 provided voltages for FPGA.
what about the voltage regulations for the dac, opamps and crystal clocks?
does Adi2dac make use of low-dropout (LDO) voltage regulators for these voltages?
Yours Faithfully,
CK

5 Reply by MC

  • MC
  • MC
  • Administrator
  • Offline
  • From: Germany/Thailand
  • Registered: 2007-04-06
  • Posts: 24,818

Re: Is ADI2DAC using TPS542951 as DC-DC converter?

See manual, chapter 6. Sorry, but I will not answer more questions on such specific details. I am too busy for that.

Regards
Matthias Carstens
RME

MC's Website

  • Registered: 2018-04-23
  • Posts: 8

Re: Is ADI2DAC using TPS542951 as DC-DC converter?

Thanks again.