Hi Grix,
I have a question about the X/Y Channel Offset.
As shown in the schematic, the voltage of Offset will be 2.5V/2/1.165=1.073V. The voltage range of X/Y should be 0.417V ~ 2.083V. The Offset voltage does not lie on the center of the X/Y range.
This means that the +X/+Y output range is -3.976 to 6.121V, the -X/-Y output range is -6.121 to 3.976V, and the differential voltage is between -7.952 to 12.242V. But the ILDA standard requires a +-10V differential output.
I wonder if my calulation is correct. Besides, is it possible to remove R22?
Hi Grix, I have a question about the X/Y Channel Offset. As shown in the schematic, the voltage of Offset will be 2.5V/2/1.165=1.073V. The voltage range of X/Y should be 0.417V ~ 2.083V. The Offset voltage does not lie on the center of the X/Y range.
This means that the +X/+Y output range is -3.976 to 6.121V, the -X/-Y output range is -6.121 to 3.976V, and the differential voltage is between -7.952 to 12.242V. But the ILDA standard requires a +-10V differential output.
I wonder if my calulation is correct. Besides, is it possible to remove R22?
Thanks a lot.