The PRL-430N is a dual channel, differential/ single-ended
input ECL receiver module with complementary outputs. The PRL-430P is the
PECL version, and the PRL-430LP is the LVPECL version. They are intended
for converting single-ended signals, including GHz sine waves, into differential
ECL signals for driving long lines and for receiving differential signals
from long lines.
A switch selects either single-ended or differential inputs,
as shown in Fig. 1. In the differential input
mode, both inputs D and D
are terminated internally into 50 Ω/-2 V, and, therefore, either one or
both inputs can accept AC coupled signals as well. In the single input mode,
signals should be connected to the D inputs only. The
D inputs are switched internally
to VBB, nominally -1.3 V, and termination resistors RT's
for the D input channels
are changed to 62 Ω. Complementary outputs of the PRL-430N are designed
for driving 50 Ω loads terminated into -2 V. With internal pull-down resistors
these outputs can also be AC coupled for driving 50 Ω loads terminated to
ground or to other voltages.
The PRL-430N and PRL-430P are housed in a 1.3 x 2.9 x 2.2-in.
extruded aluminum enclosures and supplied with a ±8.5 V/1.4 A AC/DC adapter.