AD9650 BIST pattern

Hi Andrew,

Thanks for your interest in AD9650!

The PN short sequence is equivalent to PN9 with polynomial x^9+x^5+1 and the PN long is PN23 with polynomial x^23+x^18+1.

PN sequences are under ITU-T 0.150 standard.

Regards,

Xavier

 jxav  Hi Xavier, Thank you for your quick reply. For the BIST test Enable, after running ( with BIST reset ) I understand we need to check the signature registers at addresses 0x24, 0x25. I repeatedly read back 0x17 and 0x19 respectively. Is that correct? Is there documented a way to calculate the correct BIST signature? Also, are the PN test codes output with 2s complement or will it simply match my PN generator output?

Hi Andrew,

I will link your concern to this ezone queries for checking the BIST.

(+) AD9265 BIST Function - Documents - High-Speed ADCs - EngineerZone (analog.com)

(+) AD9609 How to check if the BIST passes - Q&A - High-Speed ADCs - EngineerZone (analog.com)

More information about BIST function is found on page 13 this application note below.

AN-877 (Rev. B) (analog.com)

Regards,

Xavier

Hi Andrew,

I will link your concern to this ezone queries for checking the BIST.

(+) AD9265 BIST Function - Documents - High-Speed ADCs - EngineerZone (analog.com)

(+) AD9609 How to check if the BIST passes - Q&A - High-Speed ADCs - EngineerZone (analog.com)

More information about BIST function is found on page 13 this application note below.

AN-877 (Rev. B) (analog.com)

Regards,

Xavier