Owner manual

Device Operation (Continued)

Figure 7

shows an AC-coupled, twisted pair cable

application. It implements a center tap capacitance

termination used in conjunction with two 50Ω resistors to

filter common mode noise. R

set at 5kΩ provides 1.25V

of DC bias to each input.

PECL or LVPECL drivers may be interfaced to the

CLC001 as shown in

Figure 8

. The voltage divider

network will reduce the PECL output to the proper levels.

For LVPECL, the 100Ω series resistors should be

removed, since the common mode range inputs of the

CLC001 are wide enough to accept LVPECL levels

directly. No external DC biasing is required for

PECL/LVPECL connections.

DS101329-7

FIGURE 7. Twisted Pair Cable, AC-coupled

DS101329-8

FIGURE 8. PECL, DC-coupled

CLC001