MK3754D IDT, Integrated Device Technology Inc, MK3754D Datasheet

MK3754D

Manufacturer Part Number

MK3754D

Description

IC VCXO/PLL CLK SYNTHESIZR 8SOIC

Manufacturer

IDT, Integrated Device Technology Inc

Type

PLL Clock Synthesizer, VCXOr

Datasheet

1.MK3754DLFTR.pdf (7 pages)

Specifications of MK3754D

Pll

Yes

Input

Crystal

Output

CMOS

Number Of Circuits

Ratio - Input:output

2:1

Differential - Input:output

No/No

Frequency - Max

54MHz

Divider/multiplier

No/No

Voltage - Supply

3.15 V ~ 3.45 V

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

8-SOIC

Frequency-max

54MHz

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

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LOW COST 54 MHZ 3.3 VOLT VCXO

Description

The MK3754D and MK3754B are drop-in replacements for

the MK3754S device. Compared to these earlier devices

the MK3754D and MK3754B offer a wider operating

frequency range and improved power supply noise

rejection.

The MK3754 is ICS’ lowest cost, low jitter, high

performance 3.3 Volt VCXO and PLL clock synthesizer

designed to replace expensive 54 MHz VCXOs. The

on-chip Voltage Controlled Crystal Oscillator accepts a 0 to

3.3 V input voltage to vary the output clocks by ±100 ppm.

Using ICS’ patented VCXO and analog/digital

Phase-Locked Loop (PLL) techniques, the device uses an

inexpensive external 13.5 MHz pullable crystal input to

produce a 54 MHz output clock.

The MK3754D exhibits a moderate VCXO gain of

120 ppm/V typical, when used with a high quality external

pullable quartz crystal. The MK3754B offers a higher

VCXO gain of 150 ppm/V. The higher intrinsic VCXO gain

of the MK3754B may help compensate for the reduced

pullability of a low quality crystal used in some applications.

However, higher VCXO gain may also increase clock output

phase noise.

Block Diagram

IDT™ / ICS™ LOW COST 54 MHZ 3.3 VOLT VCXO

13.5 M H z

P ullable

C rystal

V IN

X 1

X 2

C ontrolled

O scillator

V oltage

C rystal

G N D

V D D

The frequency of the on-chip VCXO is adjusted by an

external control voltage input into pin VIN. Because VIN is a

high impedance input, it can be driven directly from an

PWM RC integrator circuit. Frequency output increases

with VIN voltage input. The usable range of VIN is 0 to 3 V.

Features

•

MK3754D is Recommended for New Designs.

P LL/C lock

S ynthesis

MK3754D and MK3754B are drop-in upgrades to the

earlier MK3754S device

Packaged in 8-pin SOIC

Available in Pb (lead) free package

Operating voltage of 3.3 V

Uses an inexpensive 13.500 MHz external crystal

On-chip VCXO (patented) with pull range of 200 ppm

(minimum)

VCXO turning voltage of 0 to 3.3V

12 mA output drive capability at TTL levels

Advanced, low power, sub-micron CMOS process

C ircuitry

54 M H z

MK3754

DATASHEET

MK3754

REV H 072805

Related parts for MK3754D

MK3754D Summary of contents

Page 1

... PWM RC integrator circuit. Frequency output increases with VIN voltage input. The usable range of VIN Features • MK3754D and MK3754B are drop-in upgrades to the earlier MK3754S device • Packaged in 8-pin SOIC • Available in Pb (lead) free package • ...

Page 2

MK3754 LOW COST 54 MHZ 3.3 VOLT VCXO Pin Assignment ...

Page 3

MK3754 LOW COST 54 MHZ 3.3 VOLT VCXO External Component Selection The MK3754 requires a minimum number of external components for proper operation. Decoupling Capacitor A decoupling capacitor of 0.01 µF must be connected between VDD (pin 2) and GND ...

Page 4

MK3754 LOW COST 54 MHZ 3.3 VOLT VCXO Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK3754. These ratings, which are standard values for ICS commercially rated parts, are stress ratings only. Functional ...

Page 5

... Level) Operating Supply Current Short Circuit Current VIN, VCXO Control Voltage AC Electrical Characteristics VDD = 3.3 V ±5% , Ambient Temperature 0 to +70° C, unless stated otherwise Parameter Crystal Pullability MK3754D and MK3754B MK3754S VCXO Gain MK3754D MK3754B MK3754S Output Rise Time Output Fall Time ...

Page 6

... Parts that are ordered with a "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. Note 1: MK3754D and MK3754DLF are recommended for new designs. Call factory for information on MK3754S. While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use ...

Page 7

MK3754 LOW COST 54 MHZ 3.3 VOLT VCXO Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United ...

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