MK2732-05

Low Phase Noise VCXO+Multiplier

MDS 2732-05 D

1

Revision 122799

Printed 11/16/00

Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA •95126•(408) 295-9800 tel• www.icst.com

Block Diagram

Description

Features

The MK2732-05 is a low cost, low jitter, high

performance VCXO and PLL clock synthesizer

designed to replace expensive discrete VCXOs

and multipliers. The on-chip Voltage Controlled

Crystal Oscillator (VCXO) accepts a 0 to 3 V

input voltage to cause the output clocks to vary by

±100 ppm. Using ICS/MicroClock’s patented

VCXO and analog Phase-Locked Loop (PLL)

techniques, the device uses an inexpensive 10 MHz

to 14.318 MHz pullable crystal input to produce

one or two output clocks.

ICS manufactures the largest variety of Set-Top

Box and multimedia clock synthesizers for all

applications. Consult ICS to eliminate VCXOs,

crystals and oscillators from your board.

• Packaged in 16 pin narrow SOIC

• Replaces a VCXO and multiplier

• Uses an inexpensive pullable crystal

• Output clocks up to 85 MHz

• On-chip patented VCXO with pull range of

200 ppm (±100 ppm) minimum

• VCXO tuning voltage of 0 to 3 V

• Zero ppm synthesis error in both clocks

• 25 mA output drive capability at TTL levels

• Advanced, low power, sub-micron CMOS process

• 5 V operating voltage for core, ability to run

output clocks at 3.3V or 5V

Voltage

Controlled

Crystal

Oscillator

PLL/Clock

Synthesis

Circuitry

CLK1

10-14 MHz

pullable

crystal

X1

X2

VIN

Output

Buffer

CLK2

Output

Buffer

VDDIO

VDD5

OE

S2:S0

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