LMH0346SQ NSC [National Semiconductor], LMH0346SQ Datasheet - Page 12

• Manufacturer Part Number: LMH0346SQ
• Description: 3 Gbps HD/SD SDI Reclocker with Dual Differential Outputs
• Manufacturer: NSC [National Semiconductor]

www.national.com
Application Information
Figure 4
with the LMH0344 3 Gbps HD/SD SDI Adaptive Cable Equal-
izer and LMH0302 3 Gbps HD/SD SDI Cable Driver.
The LMH0346 inputs are LVPECL compatible. The LMH0346
has a wide input common mode range and in most cases the
input should be DC coupled. For DC coupling, the inputs must
be kept within the common mode range specified in
trical
coupled interface between the LMH0344 cable equalizer and
the LMH0346. The LMH0344 output common mode voltage
and voltage swing are within the range of the input common
mode voltage and voltage swing of the LMH0346. All that is
Characteristics.
shows an application circuit for the LMH0346 along
Figure 4
shows an example of a DC
FIGURE 4. Application Circuit
DC Elec-
12
required is a 100Ω differential termination as shown. The re-
sistor should be placed as close to the LMH0346 input as
possible. If desired, this network may be terminated with two
50Ω resisters and a center tap capacitor to ground in place of
the single 100Ω resistor.
The LMH0346 outputs are LVPECL compatible. SDO is the
primary data output and SCO/SDO2 is a second output that
may be set as the serial clock or a second data output. Both
outputs are always active. The LMH0346 output should be
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