hi,
I'm designing an lvds driver like the figure below. But it have to go in 1Gb and the outup load is killing it.
I've a cutting freq. of 500 MHz aprox. and my output load is two 100 Ohms resistances and two capacitor of 10 pF.
Can you explain me how can I increase its speed?[/quote
Hi,
If you want the output is IG, which means the time t=1/f=1.0e-9. however, your output RC constant is R*C=100*10*1.0e-12=1.0e-9. so it is clear that you cannot achieve this . Unless your cap is around 2p. So the RC constant time now is 0.2e-9. NOW your lvds can drive it .