Datasheet

Device Operation

INPUT INTERFACING

Numerous input configurations exist for applying PECL,

LVPECL, and LVDS signals to the input of the CLC001.

Inputs may be single-ended or differential, AC or DC

coupled.

The V

pin may be used to provide a DC bias voltage to the

inputs. Leave this pin as a no connect when no bias is

needed. Note that DC-coupled inputs such as direct LVDS

and LVPECL connections are self-biasing and do not require

use of the V

pin. I

, the current produced by the V

pin,

depends on R

REF

. For a given R

REF

, the I

current will

remain constant, and the bias voltage is determined by the

value of resistance, R

, between the V

pin and ground.

Figure 3 and Figure 4 show how R

corresponds to some

common V

values with R

REF

held at 1.91 kΩ and 1.5 kΩ,

respectively. Some common input configurations are shown

in Figure 5 through Figure 9.

10132911

FIGURE 3. R

vs. V

for R

REF

= 1.91 kΩ

10132912

FIGURE 4. R

vs. V

for R

REF

= 1.5 kΩ

CLC001