2 Channel Differential LVPECL Receiver

Applications:

• Converts Single-ended Input Signals into Differential Signals for driving long lines
• Ideal for receiving Differential Signal from Long Lines
• 1 PPS/IRIG-B Line Driver
• Converts GHz Sine Wave Signals into Differential LVPECL Signals
• An Essential Lab Tool for Working with GHz LVPECL Circuits

Features:

• 3 GHz typ. f_MAX
• Single-ended or Differential Inputs
• Internal 50 Ω/+1.3 V Input Terminations also accept Sinewave or AC coupled signals
• Complementary Outputs drive 50 Ω loads terminated to +1.3 V or AC coupled 50 Ω loads
• DC Coupled I/O Compatible with ECLinPS or 10 kH Devices
• SMA I/O Connectors
• Ready-to-Use 1.3 x 2.9 x 2.2-in. Module includes a ±8.5 V AC/DC Adapter

Description

The PRL-430LP is a dual channel, differential/ single-ended input LVPECL receiver module with complementary outputs. It is intended for converting single-ended signals, including GHz sine waves, into differential LVPECL 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/+1.3 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 V_BB, nominally +2.0 V, and termination resistors R_T for the D input channels are changed to 62 Ω. Complementary outputs of the PRL-430LP are designed for driving 50 Ω loads terminated into +1.3 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-430LP complementary outputs must be used together for driving differential LVPECL inputs only, because the reduced output logic swing of 400 mV_PP (for short circuit protection reasons) is not logic level compatible with some single-ended LVPECL inputs.

The PRL-430LP is housed in a 1.3 x 2.9 x 2.2-in. extruded aluminum enclosure and supplied with a ±8.5 V/1.8 A AC/DC adapter.