ICS840021 datasheet(1/11 Pages) ICST

部件名	ICS840021

功能描述	FEMTOCLOCKS??CRYSTAL-TO-LVCMOS/ LVTTL CLOCK GENERATOR

PDF	11 Pages

Scroll/Zoom	100%

制造商	ICST [Integrated Circuit Systems]

网页	http://www.icst.com

标志

1 / 11 page

840021AG

www.icst.com/products/hiperclocks.html

REV. A NOVEMBER 30, 2004

1

Integrated

Circuit

Systems, Inc.

ICS840021

FEMTOCLOCKS™CRYSTAL-TO-

LVCMOS/LVTTL CLOCK GENERATOR

GENERAL DESCRIPTION

The ICS840021 is a Gigabit Ethernet Clock

Generator and a member of the HiPerClocksTM

family of high performance devices from ICS. The

ICS840021 uses a 25MHz crystal to synthesize

125MHz.The ICS840021 has excellent phase jitter

performance, over the 1.875MHz – 20MHz integration range.

The ICS840021 is packaged in a small 8-pin TSSOP, making it

ideal for use in systems with limited board space.

FEATURES

• 1 LVCMOS/LVTTL output, 7Ω output impedence

• Crystal oscillator interface designed for 25MHz,

18pF parallel resonant crystal

• Output frequency: 125MHz

• VCO range: 560MHz to 680MHz

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

(1.875MHz - 20MHz): 0.34ps (typical)

• RMS phase noise at 125MHz (typical)

Phase noise:

Offset

Noise Power

100Hz ............... -96.9 dBc/Hz

1KHz .............. -122.2 dBc/Hz

10KHz .............. -131.1 dBc/Hz

100KHz .............. -129.5 dBc/Hz

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Industrial temperature information available upon request

HiPerClockS™

ICS

ICS840021

8-Lead TSSOP

4.40mm x 3.0mm x 0.925mm package body

G Package

Top View

VDDA

OE

XTAL_OUT

XTAL_IN

1

2

3

4

VDD

Q0

GND

nc

8

7

6

5

BLOCK DIAGRAM

PIN ASSIGNMENT

OSC

Phase

Detector

VCO

÷5

÷25

(fixed)

XTAL_IN

XTAL_OUT

OE

Q0

25MHz

类似零件编号 - ICS840021

制造商	部件名	数据表	功能描述
Integrated Circuit Syst...	ICS840021AGI	186Kb / 11P	FEMTOCLOCKS??CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER REV. A MAY 19, 2005
	ICS840021AGILF	186Kb / 11P	FEMTOCLOCKS??CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER REV. A MAY 19, 2005
	ICS840021AGILFT	186Kb / 11P	FEMTOCLOCKS??CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER REV. A MAY 19, 2005
	ICS840021AGIT	186Kb / 11P	FEMTOCLOCKS??CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER REV. A MAY 19, 2005
	ICS840021I	186Kb / 11P	FEMTOCLOCKS??CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER REV. A MAY 19, 2005

More results

类似说明 - ICS840021

制造商	部件名	数据表	功能描述
Integrated Circuit Syst...	ICS840011	190Kb / 11P	FEMTOCLOCKS CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR REV. A OCTOBER 15, 2004
	ICS840001	194Kb / 12P	FEMTOCLOCKS??CRYSTAL-TO-LVCMOS/LVTTL CLOCK GENERATOR REV. A MAY 10, 2004
	ICS840001-34	167Kb / 9P	FEMTOCLOCKS??CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER
	ICS840008-01	192Kb / 13P	FEMTOCLOCKS??CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER REV. A APRIL 7, 2005
	ICS840022	208Kb / 10P	FEMTOCLOCKS?줓RYSTAL-TO LVCMOS/LVTTL CLOCK GENERATOR REV. A JANUARY 11, 2005
Integrated Device Techn...	840001I-34	197Kb / 15P	Femtoclocks Crystal-to-LVCMOS/LVTTL Frequency Synthesizer
Renesas Technology Corp	840011	403Kb / 14P	FemtoClock® Crystal-to-LVCMOS/ LVTTL Clock Generator 5/20/16
	840051	338Kb / 13P	FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR 9/1/15
	ICS840051I	368Kb / 13P	FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR 5/20/16
	ICS840022I-02	567Kb / 15P	FemtoClock® Crystal-to-LVCMOS/LVTTL Clock Generator 2019