VX-503

Voltage Controlled Crystal Oscillator

Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com

Small 14mm x 9mm

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Low phase noise

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Frequency Range: 1 MHZ to 800 MHZ

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Previous Model: J-Type

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Clock Smoothing

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Frequency Translation

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SONET, SDH, ATM, DSLAM, ADM

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Features

Applications

VX-503

The VX-503 voltage controlled crystal oscillator expands VI’s advanced VCXO performance capabilities while adhering to a package foot-

print compatible with the industry-common J-lead package. The VX-503 VCXO is a quartz stabilized square wave generator with either a

CMOS output for driving CMOS/TTL loads or a PECL output. The device is packaged in a 6 pin J-lead ceramic package and is hermetically

sealed with a grounded conductive lid.

Description

Parameter

Min

Typ

Max

Units

Condition

Pin Out Information for the CMOS output Option

Pin

Symbol

Function

Pin 1

VC

VCXO Control Voltage

Pin 2

Tri-State1

TTL logic low disables output.

TTL logic high, or no connect, enables output.

Pin 3

GND

Case and Electrical Ground

Pin 4

Output

VCXO Output

Pin 5

CMOS/TTL select1,2

TTL logic low optimizes symmetry for CMOS.

TTL logic high, or NC, optimizes symmetry for

TTL

Pin 6

VCC

Power Supply Voltage (5.0 V or 3.3 V ±10%)

1. Standard option. Tri-State can be connected to pin 5 and CMOS/TTL select would be on pin 2.

2. Output is HCMOS. For frequencies >12MHz, this option optimizes symmetry for either CMOS or TTL thresholds. Ground this pin for

frequencies < 12MHz.

Performance Speci cations