PRL-255CN PULSE RESEARCH LAB, PRL-255CN Datasheet

Product Description:SmallSignalFreq.Divider(f/2,f/4)

PRL-255CN

Manufacturer Part Number

PRL-255CN

Description

Product Description:SmallSignalFreq.Divider(f/2,f/4)

Manufacturer

PULSE RESEARCH LAB

Datasheet

1.PRL-255CN.pdf (2 pages)

Specifications of PRL-255CN

Rohs Compliant

Lead Free Status / RoHS Status

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APPLICATIONS

FEATURES

PRL-255N/P ÷ ÷ ÷ ÷ 2 and ÷ ÷ ÷ ÷ 4 NECL/PECL FREQUENCY DIVIDERS

DESCRIPTION

The PRL-255N and PRL-255P are, respectively, NECL and PECL frequency divider modules, each containing ÷2 and a ÷4

frequency dividers capable of toggling at frequencies in excess of 3GHz. The module can also provide the ÷8 function by

cascading the two dividers. The PRL-255N and the PRL-255P are essential lab tools for device test and systems integration

in wireless and digital communications applications.

Each divider in the module has differential inputs and complementary outputs. A common switch selects either single-ended

or differential inputs. In the differential input mode, both inputs CLK and CLK are terminated internally into 50Ω /V

where V

signals as well. In the single input mode, input signals should be connected to the CLK inputs only. The CLK inputs are

internally switched to V

channels are changed to 62 Ω . Complementary outputs of both channels are designed for driving 50 Ω loads terminated into

Either output from the PRL-255N can drive a single-ended NECL input. The PRL-255P complementary outputs, however,

must be used together for driving differential PECL inputs only, because the reduced output logic swing of 400mVp-p, due to

short circuit protection reasons, is not logic level compatible with single-ended PECL input.

Block diagrams of the PRL-255N and PRL-255P are shown in Figs. 1A and 1B.

The PRL-255N and PRL-255P are each housed in a 1.3 x 2.9 x 2.2-in. extruded aluminum enclosure and is supplied with a

±8.5V/1A AC/DC Adaptor.

If mounting is desired, a pair of 35001420 mounting brackets can accommodate two PRL modules of the same length. A

number of PRL modules can also share a single ±8.5V AC/DC adaptor using the PRL-730 or PRL-746 voltage distribution

module. Please see the Accessories Section for more detail.

•

, AC coupled or floating 50 Ω loads.

GHz Frequency Division in Device Test and

Systems Integration

High speed Clock signal Generation for SONET

applications

An Essential Lab Tool for Working with GHz

NECL/PECL Circuits

3 GHz Toggle Frequency

Single-ended or Differential Inputs

Internal 50 Ώ/V

Complementary Outputs drive 50 Ώ Loads

terminated to V

Loads

DC Coupled I/O's Compatible with ECLinPS or

10KH Devices

BNC or SMA I/O Connectors

Ready-to-Use 1.3 x 2.9 x 2.2-in. Module includes

a ±8.5V AC/DC Adaptor

is equal to -2V for NECL and +3V for PECL, and, therefore, either one or both inputs can accept AC coupled

, AC coupled or floating 50 Ώ

Input Terminations

, nominally -1.3Vfor NECL and +3.7V for PECL, and input resistors R

PRL-255N NECL Frequency Divider

1234 Francisco Street, Torrance, CA 90502

Tel: 310-515-5330 Fax: 310-515-0068

's for the CLK input

sales@pulseresearchlab.com

www.pulseresearchlab.com

Related parts for PRL-255CN

PRL-255CN Summary of contents

Page 1

... PECL input. Block diagrams of the PRL-255N and PRL-255P are shown in Figs. 1A and 1B. The PRL-255N and PRL-255P are each housed in a 1.3 x 2.9 x 2.2-in. extruded aluminum enclosure and is supplied with a ±8.5V/1A AC/DC Adaptor. ...

Page 2

... If a single output is used, one other complementary output must be terminated; otherwise, output waveform distortion and rise time degradation will occur. Use the PRL-550NQ/PQ4X, four channel NECL/PECL Terminators, respectively, for the 50 Ω /V termination and for connection TT ...

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