Question
Are there any issues with the reading of the speed grade (CHIP_GRADE register
02) on AD9434? The speed grade options provided in the datasheet (table 13,
page 25) are:
00=500 MSPS
01= 370 MSPS
But I am reading “10” from address 02 (CHIP_GRADE) and I am expecting
“01” (370 MSPS option).
It does not look like I have any SPI reading issues as I am able to read the
CHIP_ID register correctly.
Answer
The CHIP_GRADE is incorrectly documented on the datasheet. The correct speed
grade options for address 02 are:
10= 500 MSPS
01= 370 MSPS
The corrected table is attached, this will be added to the datasheet at the
next datasheet update.