Hi!
I like to implement a serie resistor on RO output signal (pin 1) when using 50R transmission lines for good signal integrity. Hence the following questions:
1. Is there any IBIS model available to the LTC1685 transceiver?
2. What is the approximate output impedance of the RO output signal?
Best regards
Joakim
Hi Joakim:
unfortunately we do not have IBIS model for this part. A way to roughly estimate the output impedance is via the output logic threshold.
VOH is specified with VDD=5.0V, Io=4mA, then Ro could be calculated by (5.0 V - 4.8 V) / 4mA = 50 ohm.
Regards
Chris
Hi Joakim:
unfortunately we do not have IBIS model for this part. A way to roughly estimate the output impedance is via the output logic threshold.
VOH is specified with VDD=5.0V, Io=4mA, then Ro could be calculated by (5.0 V - 4.8 V) / 4mA = 50 ohm.
Regards
Chris
