843022AG

www.icst.com/products/hiperclocks.html

REV. A NOVEMBER 30, 2004

1

Integrated

Circuit

Systems, Inc.

ICS843022

PRELIMINARY

The ICS843022 is a Fibre Channel Clock Generator

performance devices from ICS. The ICS843022

uses a 25MHz crystal to synthesize 125MHz or

62.5MHz. The ICS843022 has excellent phase

jitter performance, over the 12KHz – 20MHz integration range.

The ICS843022 is packaged in a small 8-pin TSSOP, making

it ideal for use in systems with limited board space.

• 1 differential 3.3V LVPECL output

• Crystal oscillator interface designed for 25MHz,

18pF parallel resonant crystal

• Output frequencies: 125MHz or 62.5MHz (selectable)

• RMS phase jitter @ 125MHz, using a 25MHz crystal

(12KHz - 20MHz): 0.62ps (typical)

• RMS phase noise at 125MHz (typical)

Offset

Noise Power

100Hz ............... -94.6 dBc/Hz

1KHz .............. -122.8 dBc/Hz

10KHz .............. -132.2 dBc/Hz

100KHz .............. -132.0 dBc/Hz

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Industrial temperature information available upon request

HiPerClockS™

ICS

ICS843022

8-Lead TSSOP

4.40mm x 3.0mm x 0.925mm package body

G Package

Top View

XTAL_OUT

XTAL_IN

1

2

3

4

Q0

nQ0

FREQ_SEL

8

7

6

5

OSC

Output

Divider

XTAL_IN

XTAL_OUT

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Q0

FREQ_SEL

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The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial

product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.