8V19N850 Hardware Design Guide
X0120307 Rev.1.0
Mar 25, 2021
Page 11
Figure 12. Alternative LVPECL Style Term ination
Table 4. Resistor Values for Output Term ination in Figure 12
Output Supply Voltage
Output Am plitude
R1, R3
R2, R4
V
DDO_V
= 1.8V
350mV
350
Ω
60Ω
500mV
No-pop
50Ω
V
DDO_V
= 2.5V
350mV
125
Ω
83
Ω
500mV
166
Ω
71
Ω
V
DDO_V
= 3.3V
350mV
92Ω
110Ω
500mV
106Ω
94Ω
750mV
127Ω
82.5Ω
1000mV
157Ω
73Ω
Zo = 50
R3
Zo = 50
VDDO_v
VDDO_v
R2
High Impedance Input
+
-
LVPECL Driv er
R4
No Built-in Termination
R1