The system works almost perfectly except for some LEDs that do not stay OFF but turn ON very dimly. I attach a video where the effect can be seen.
I saw this effect for the first time when I was prototyping the ADG1408 on a breadboard, but it was only visible on the first LED. Now it is visible on two or three LEDs. I'm aware of this problem on the TLC5940 and I worked a lot on solving and alone it doesn't show any flicker.
The schematic of the system is as follows:
What could be the reason for the LEDs not staying off? I tried adding some pull-down resistors on the logic pins A0, A1, A2 and EN but it made no difference.
The voltage on the LEDs is 10V with a fixed current of 0.01A, the timing of the switching is 55ms so it should be on the safe-side of both ICs.