Hi,
I have interface AD7986 with FPGA. With Internal reference and Turbo mode, I am reading data in CS MODE, 4-WIRE WITHOUT BUSY INDICATOR.
Clock – 25MHz
Conversion time used is 600ns
Data reading during acquisition.
Below are digital output code got for respective voltage
4 volt - 0x1F90E
3 volt - 0x178A9
2 volt - 0xE94A
1.5 volt - 0x7145
1 volt - 0x0148
0.5 volt - 0x3EF15
What may be the reason for this observed voltage drop.
Please find attached schematics.
Thanks and Regards,
Dileep
