I read the AD8143-EVALZ_AD8145-EVALZ_UG-862.pdf ,and I am confused about the figure 3 in page 6
1、Why connect R_CM,B_CM,G_CM to VCC and VEE via resistance ,such as R53,R56,R54,R55,R61,R62
2、Why use R32,R33,R51
I dont see the resistance above in AD8145's datesheet ,figure 44 in page 20 , can I design just like figure 44
My schematic is attached,wish you give your feedbackAD8145.pdf
For resistance details, Please refer https://ez.analog.com/video/f/q-a/7498/ad8142-ad8143-reference-design I beleive yes you can,AD8145 is designed to work with dual rails, like +-5 or +-2.5V, not just +5V. Sine the differential input is not AC coupled we have to assume it can go below ground, The common mode operating range is Vs+ to Vs-So for differential RGB GBR --> 8145 --> Ain2,3,5 --> ADC 0,2,1 with G tied to SOG (pin33)for differential YC Y --> G diff --> Ain2 --> ADC 0 with G tied to SOG (pin) C --> R diff --> Ain5 --> ADC 1
So for differential RGB GBR --> 8145 --> Ain2,3,5 --> ADC 0,2,1 with G tied to SOG (pin33)
Ain2,3,5 --> ADC 0,2,1 with G tied to SOG (pin33) which IC do you refer to ?
in my design, GBR --> 8145 -->ADV7842
But we referred as ADV7181D decoder chip.