PRL-260ANT PULSE RESEARCH LAB, PRL-260ANT Datasheet

Product Description:ProgrammableNECL/TTLFrequencyDivider(f/2 - F/512)

PRL-260ANT

Manufacturer Part Number

PRL-260ANT

Description

Product Description:ProgrammableNECL/TTLFrequencyDivider(f/2 - F/512)

Manufacturer

PULSE RESEARCH LAB

Datasheet

1.PRL-260ANT.pdf (4 pages)

Specifications of PRL-260ANT

Rohs Compliant

Lead Free Status / RoHS Status

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DESCRIPTION

The PRL-260NT is an 8-Bit, manually programmable frequency divider capable of running at input clock frequencies in excess

of 1 GHz. A NECL input is logically ORed with a secondary TTL input. Complementary NECL and TTL f/n outputs are

provided, as well as complementary NECL f/1 output. A signal applied to either the NECL or TTL input is divisible by any

number between 2 and 256 using D1 through D8 of the DIP switch. D9 divides the f/n outputs further by 2 for f/2n square

outputs. A logic Hi applied to either input disables the divider function.

The NECL input can accept either single-ended NECL, differential NECL, or sinewave signals, selectable by a switch, and has

internal 50 Ώ/ V

the minimum signal required is only 1 V.

The NECL output is designed for driving 50 Ώ loads terminated into V

loads. The complementary 50 Ω back terminated TTL outputs can drive long 50 Ω lines with or without terminations.

Applications of the PRL-260 frequency divider includes precision clocks for high speed digital systems, low jitter clock source

for testing A/D’s, SONET clock generator, general purpose frequency division and Basic Lab Tool for working with NECL and

TTL circuits. Each model is housed in a 1.3 x 2.9 x 8-in. extruded aluminum enclosure and is supplied with a ±8.5 V AC/DC

adapter.

APPLICATIONS

FEATURES

•

Systems Clock Simulation

Low Jitter ECL/TTL Clock

Source

SONET Clock Generator

An Essential Lab Tool for

Working with ECL and

TTL Circuits

f/2 to f/256, 8-bit resolution

Square wave outputs to f/512

Single-ended ECL, differential ECL, or Sinewave Inputs

with internal 50Ω/V

Additional Logically ORed TTL Input

f, f , NECL Outputs

f/n and

20ps typical Edge Jitter

50ps typical skew between f/n &

200ps typical skew between f/n &

PRL-260NT PROGRAMMABLE FREQUENCY DIVIDER

n /

terminations, where V

NECL and TTL Outputs

terminations

n /

is –2 V for NECL. The TTL input has a ground-referenced 50 Ώ termination and

NECL outputs

TTL outputs

FEATURES (cont’d)

• 1.15GHz typical maximum External Clock Input

• Complementary NECL Outputs drive 50 Ω loads

• Complementary TTL Outputs drive Long Lines with

• DC coupled I/O’s

• BNC TTL Input and SMA I/O Connectors for others

• Ready-to-Use 1.3 x 2.9 x 8-in. Module includes a

frequency

terminated to V

or without 50 Ω load Terminations

±8.5V AC/DC Adapter

, and can also drive AC coupled or floating 50 Ω

1234 Francisco Street, Torrance, CA 90502

, AC coupled or floating 50 Ω loads

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

Email:

sales@pulseresearchlab.com

www.pulseresearchlab.com

Related parts for PRL-260ANT

PRL-260ANT Summary of contents

Page 1

... The complementary 50 Ω back terminated TTL outputs can drive long 50 Ω lines with or without terminations. Applications of the PRL-260 frequency divider includes precision clocks for high speed digital systems, low jitter clock source for testing A/D’s, SONET clock generator, general purpose frequency division and Basic Lab Tool for working with NECL and TTL circuits. Each model is housed in a 1.3 x 2.9 x 8-in. extruded aluminum enclosure and is supplied with a ± ...

Page 2

... An unused complementary 50 Ω output must be either terminated into 50 Ω otherwise, output waveform distortion and rise time degradation will occur. Use the PRL-ACT-50, Dual Ch. AC-Coupled 50 Ω Termination, for the 50 Ω /V termination. Use the PRL-SC-104 or PRL-ACX-12dB (0.1 µ block and 12 dB AC-coupled TT attenuator, respectively) for connection of NECL signals to 50 Ω ...

Page 3

... PRL-260NT Divisor/Switch Settings with Sample Frequencies f f=500.0000 f=622.0800 f=644.53125 250.0000 166.6667 4 1 125.0000 100.0000 83.3333 71.4286 8 1 62.5000 55.5556 50.0000 45.4545 12 1 41.6667 38.4615 35.7143 33.3333 16 1 31.2500 29.4118 27.7778 26.3158 20 1 25.0000 23.8095 22.7273 21.7391 24 1 20.8333 20.0000 19.2308 18.5185 ...

Page 4

... PRL-260NT Divisor/Switch Settings with Sample Frequencies f f=500.0000 f=622.0800 f=644.53125 129 3.8760 130 3.8462 131 3.8168 132 1 3.7879 133 3.7594 134 3.7313 135 3.7037 136 1 3.6765 137 3.6496 138 3.6232 139 3.5971 140 1 3.5714 141 3.5461 142 3.5211 143 3.4965 144 1 3.4722 ...

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