PRL-434A 1:4 Differential ECL Fanout Buffer

Basic Lab Tools > Fanout Buffers > PRL-434A

Applications:

• Fan out Single-ended/Differential ECL Inputs into four pairs of Differential ECL Outputs for driving long lines
• Ideal for receiving signals from long lines
• Fan out GHz Sinewave signals into four pairs of Differential NECL signals
• An Essential Lab Tool for Working with NECL Circuits

Features:

• 3.5 GHz typical f_MAX
• Single-ended or Differential Inputs
• Internal 50 Ω/-2 V Input Terminations also accept AC coupled PECL or Sinewave signals
• Complementary Outputs drive 50 Ω loads terminated to -2 V or AC- coupled 50 Ω loads
• DC- Coupled I/Os Compatible with ECLinPS or 100 kH Devices
• SMA I/O Connectors
• Ready-to-Use 1.3 x 2.9 x 2.9-in. module includes AC/DC Adapter

Description

The PRL-434A is a 1:4 Differential NECL Fanout Buffer module. It is intended for fanning out single-ended or differential NECL signals into four pairs of differential outputs. It can also be used for converting AC coupled GHz sinewave or PECL signals into differential ECL signals.

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, signal should be connected to the D input only. Input D is switched internally to V_BB, nominally -1.3 V, and termination resistor R_T for the D input channel is changed to 62 Ω. Complementary outputs of the PRL-434, with internal pull down resistors, can drive either 50 Ω loads terminated into -2 V, or AC-coupled or floating 50 Ω loads.

The PRL-434A is housed in a 1.3 x 2.9 x 2.9-in. extruded aluminum enclosure and is supplied with a ±8.5 V/1.4 A AC/DC Adapter.

The PRL-434A is an improved model of the previous PRL-434. It has faster rise/fall times, a higher f_MAX and a redesigned mechanical layout with all the outputs on the same side of the unit. The PRL-434A is recommended for all new applications except where the smaller enclosure size or specific connector orientation of the PRL-434 are critical. 

Detail | Diagram | Specifications | PRL-434A Datasheet | PRL-434LP Datasheet