SY58012U_08 Datasheet, PDF (7/9 Pages) Micrel Semiconductor – 5GHz, 1:2 LVPECL FANOUT BUFFER/TRANSLATOR WITH INTERNAL INPUT TERMINATION

Micrel, Inc.
INPUT STAGE
Precision Edge^®
SY58012U
V_CC
IN
50Ω
V_T
GND
50Ω
/IN
Figure 2. Simplified Differential
Input Buffer
INPUT INTERFACE APPLICATIONS
V_CC
V_CC
LVPECL
IN
/IN
SY58012U
0.01µF
R_pd
V_CC
VT
V_REF-AC
NC
Note:
For V_CC = 2.5V systems, R_pd = 19Ω.
For V_CC = 3.3V systems, R_pd = 50Ω.
Figure 3a. LVPECL
Input Interface
V_CC
V_CC
CML
NC
NC
IN
/IN
SY58012U
VT
V_REF-AC
Figure 3d. DC-Coupled CML
Input Interface
(option: may connect V_T to V_CC)
V_CC
V_CC
LVPECL
R_pd
R_pd
0.01µF
IN
/IN
SY58012U
VT
V_REF-AC
Note:
V_CC
For V_CC = 3.3V system, R_pd = 100Ω
For V_CC = 2.5V system, R_pd = 50Ω
Figure 3b. AC-Coupled LVPECL
Input Interface
V_CC
V_CC
CML
IN
/IN
SY58012U
0.1µF
V_CC
VT
V_REF-AC
Figure 3e. AC-Coupled CML
Input Interface
M9999-051408
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V_CC
V_CC
LVDS
NC
NC
IN
/IN
SY58012U
VT
V_REF-AC
Figure 3c. LVDS
Input Interface