PRL-480N Dual Channel Programmable NECL Delay Module 

Basic Lab Tools > Delay Modules > PRL-480N

Applications:

• High Speed Clock De-skewing
• Critical Timing Adjustment
• Sub-nanosecond Pulse Width generation
• An Essential Lab Tool for Working with GHz ECL Circuits

Features:

• 1.2 GHz Maximum Clock Rate
• 2.2 ns Maximum Delay
• 17.5 ps minimum program resolution
• Single-ended or Differential Inputs
• Internal 50 Ω/-2 V Input Terminations also accept Sine wave or AC coupled PECL Signals
• Complementary ECL Outputs drive 50 Ω/-2 V
• DC Coupled I/O’s
• SMA I/O Connectors
• Ready-to-Use 1.3 x 2.9 x 3.9-in. Module including a ±8.5 V/750 mA AC/DC Adapter

Description

The PRL-480N is a dual channel programmable NECL Delay module. It is intended for clock de-skewing and critical timing adjustment in high speed logic circuit testing, and it has a maximum clock frequency of 1.2 GHz. The outputs of the two channels can be connected to an AND gate, such as the PRL-435, for generating sub-nanosecond pulse width signals.

The delay of each channel can be individually programmed using a seven-position DIP-switch and a channel selector switch. The input of each channel can be driven either differentially or single ended. 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. Inputs D are switched internally to V_BB, nominally -1.3 V, and termination resistors R_T's for the D input channels are changed to 62 Ω. Complementary outputs of the PRL-480 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, such as +3 V for PECL circuits.

The PRL-480 is housed in a 1.3 x 2.9 x 3.9-in. extruded aluminum enclosure and is supplied with a ±8.5 V/750 mA AC/DC Adapter.

***All prices are for domestic orders only. For international orders, please add 15%. Prices are subject to change without notice. Please consult factory for additional information at 310-515-5330.***

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