Other Parts Discussed in Thread: LMX2820
Tool/software:
Dear Specialists,
My customer is considering LMX1204 and LM2820 for JESD204B CLK.
They have questions, I would be grateful if you could advise.
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We have questions regarding LMX2820 and LMX1204.
Could you please advise?
I want to generate four 3.2GHz signals for ADC, two 6.4GHz signals for DAC, one JESD204B SYSREF (6.25MHz), one LOGICCLK (200MHz) and one LOGICSYSREF (6.25MHz) signal.
Q1: Is it possible to output different frequencies from RFOUTA and RFOUTB of LMX2820?
Q2: The receiving side (RFSoC) has one SYSREF input, and the RFSoC's built-in ADC: 8ch and DAC: 8ch share one SYSREF input. The LMX1204 has a SYSREFOUT for each CLKOUT, but is it okay to use any SYSREFOUT?
Q3: The LMX2820 does not have an input port for the SYNC signal.
I connected the SYNC signal to the SYSREFREQ pin of the LMX1204, and configured the LMX2820's SYSREF output (SROUT pin) not to be used.
Is this no problem?
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I appreciate your great help in advance.
Best regards,
Shinichi