ICS663 datasheet(1/7 Pages) ICST

Part #	ICS663

Description	PLL BUILDING BLOCK

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Manufacturer	ICST [Integrated Circuit Systems]

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ICS663

MDS 663 D

1

Revision 062904

Integrat ed Circuit Systems ● 525 Race Stre et, San Jo se, CA 9 5126 ● te l (40 8 ) 2 97-12 01 ● www.ics t.co m

PLL BUILDING BLOCK

Description

The ICS663 is a low cost Phase-Locked Loop (PLL)

designed for clock synthesis and synchronization.

Included on the chip are the phase detector, charge

pump, Voltage Controlled Oscillator (VCO) and an

output buffer. Through the use of external reference

and VCO dividers (implemented with the ICS674-01,

for example), the user can easily configure the device

to lock to a wide variety of input frequencies.

The phase detector and VCO functions of the device

can also be used independently. This enables the

configuration of other PLL circuits. For example, the

ICS663 phase detector can be used to control a VCXO

circuit such as the MK3754.

For applications requiring Power Down or Output

Enable features, please refer to the ICS673-01.

Features

• Packaged in 8-pin SOIC

• Output clock range 1 MHz to 100 MHz (3.3 V), 1 MHz

to 120 MHz (5 V)

• External PLL loop filter enables configuration for a

wide range of input frequencies

• Ability to accept an input clock in the kHz range

(video Hsync, for example)

• 25 mA output drive capability at TTL levels

• Lower power CMOS process

• +3.3 V ±5% or +5 V ±10% operating voltage

• Used along with the ICS674-01, forms a complete

PLL circuit

• Phase detector and VCO blocks can be used

independently for other PLL configurations

• Industrial temperature version available

• For better jitter performance, use the MK1575

Block Diagram

REF IN

P hase/

Frequency

De te cto r

VCO

4

2

SEL

LFR

LF

UP

FBIN

DOW N

I

cp

I

cp

CL K

VDD

MU X

1

0

E xternal F eedback D ivider

(such as the IC S 674-01)

C lock Input

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