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ADS5263: LCLK and ADCLK issue of ADS5263

Part Number: ADS5263

Dear,

I have ADS5263 in my design,schematic as below:

CLKP is a single ended 12.5M 3.3V CMOS clock.

When I debugged the board, I found the ADCLK and LCLK is not related to CLKP.

The ADCLK and LCLK have the same output as I remove R45 and keep the CLKP Pin floating.

It seems the PLL in ADS5263 is not locked and behave like there is no CLKP input.

CLKP wave: 12.5MHz, 3.3V CMOS

ADCLKP: about 300Hz clock, duty cycle is not stable

LLCKP: about 4kHz, duty cycle is not stable