8V19N850 Hardware Design Guide
X0120307 Rev.1.0
Mar 25, 2021
Page 12
Figure 13. Alternative LVPECL Style Term ination
Table 5. Resistor Values for Output Term ination in Figure 13
Output Supply Voltage
Am plitude
R3
V
DDO_V
= 1.8V
350mV
21.4
Ω
500mV
0Ω
V
DDO_V
= 2.5V
350mV
71.4
Ω
500mV
41
Ω
V
DDO_V
= 3.3V
350mV
128Ω
500mV
86Ω
750mV
57Ω
1000mV
40
Ω
High Impedance Input
+
-
R3
No Built-in Termination
R1
50
Zo = 50
LVPECL Driv er
R2
50
C1
0.1uF(optional)
VDDO_v
Zo = 50
