LMH0001_10 Datasheet, PDF (2/4 Pages) National Semiconductor (TI) – Replacing the CLC001 Cable Driver with the LMH0001

FIGURE 1. CLC001 Typical Application
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FIGURE 2. LMH0001 Typical Application
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INPUT INTERFACE
The input common mode voltage range of the CLC001 is be-
tween 0.05V and 3.25V, and the minimum differential input
amplitude is 100 mV. The CLC001 inputs require a DC bias
voltage to be applied when the inputs are AC coupled, and
the V_BB pin may be used for this. When driven differentially,
the CLC001 inputs are typically terminated with a 100Ω re-
sistor placed across the input pins, or two 50Ω resistors with
a center tap capacitor to ground.
The LMH0001 input interface is similar to that of the CLC001,
but it does not support rail-to-rail inputs like the CLC001. The
input common mode voltage range of the LMH0001 is from
1.6V + V_SDI/2 to V_CC - V_SDI/2, with the same minimum differ-
ential input amplitude as the CLC001. The LMH0001 inputs
are self-biased, so no DC bias voltage is necessary when the
inputs are AC coupled. When driven differentially, the
LMH0001 inputs are typically terminated with a 100Ω resistor
or two 50Ω resistor like the CLC001.
OUTPUT INTERFACE
The CLC001 outputs are designed to drive 75Ω AC-coupled
coaxial cable. They are current mode and ground referenced,
requiring 75Ω resistors to ground to generate the output volt-
age. The output level is controlled by the R_REF resistor.
The LMH0001 outputs are also current mode and designed
to drive 75Ω AC-coupled coaxial cable. But the LMH0001
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