azerty.t
Newbie level 3
Hi, I m designing an LVDS transmitter and during simulation I used a transmission line model under cadence environement' The transmitter contain two 50 ohm resistance forming 100 ohm differantial and for simulation I putted 100 ohm at the receiver level so that the transmission line sees from both sides 100 ohm, the simulation worked good but I don t understand why when I changed the 50ohm resistance by a series of 31 parallel resistance of 1.55 K ohm (this was for layout reasons) the impedance matching was destroyed and I noticed important reflection this is abnormal for me because the transmission line still see 100 ohm from both sides.
Is there any one who can help me.
Cordially.
Is there any one who can help me.
Cordially.