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| SI5347 Datasheet, PDF (38/59 Pages) Silicon Laboratories – DUAL/QUAD DSPLL ANY-FREQUENCY, ANY-OUTPUT JITTER ATTENUATORS | |||
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Si5347/46
5.8.2. Differential Output Terminations
Note: In this document, the terms, LVDS and LVPECL, refer to driver formats that are compatible with these signaling
standards.
The differential output drivers support both ac-coupled and dc-coupled terminations as shown in Figure 25.
DC-coupled LVDS
VDDO = 3.3V, 2.5V, 1.8V
Si5347/46
OUTx
OUTx
50
100
50
AC-coupled LVDS/LVPECL
VDDO = 3.3V, 2.5V, 1.8V
50
OUTx
OUTx
100
50
Si5347/46
Internally
self-biased
DC-coupled LVCMOS
VDDO = 3.3V, 2.5V, 1.8V
50
OUTx
Rs
OUTx
Si5347/46
50
Rs
3.3V, 2.5V, 1.8V
LVCMOS
AC-coupled LVPECL
VDDO = 3.3V, 2.5V
Si5347/46
OUTx
OUTx
VDD â 1.3V
50
50
50
50
AC-coupled HCSL
VDDO = 3.3V, 2.5V, 1.8V
R1
R1
OUTx
50
OUTx
50
Si5347/46
R2
R2
VDDRX
Standard
HCSL
Receiver
For VCM = 0.35V
VDDRX
3.3V
2.5V
1.8V
R1
442 ï
332 ï
243 ï
R2
56.2 ï
59 ï
63.4 ï
Figure 25. Supported Differential Output Terminations
38
Rev. 1.1
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