844202AKI-245LF

844202AKI-245LF Datasheet

ICS844202-245

Part	Datasheet
844202AKI-245LF	844202AKI-245LF (pdf)

Related Parts	Information
844202AKI-245LFT	844202AKI-245LFT

PDF Datasheet Preview
CRYSTAL-TO-LVDS PCI EXPRESS CLOCK SYNTHESIZER W/SPREAD SPECTRUM ICS844202-245 The ICS844202-245 is a 2 output PCI Express clock synthesizer optimized to generate low jitter PCIe HiPerClockS reference clocks with or without spread spectrum modulation and is a member of the HiPerClockS family of high performance clock solutions from IDT. Spread type and amount can be configured via the SSC control pins. Using a 25MHz, 18pF parallel resonant crystal, the device will generate LVDS clocks at either 25MHz, 100MHz, 125MHz or 250MHz. The ICS844202-245 uses a low jitter VCO that easily meets PCI Express jitter requirements and is packaged in a 32-pin VFQFN package. • Two LVDS outputs at 25MHz, 100MHz, 125MHz or 250MHz • Crystal oscillator interface, 25MHz, 18pF parallel resonant crystal • Supports the following output frequencies 25MHz, 100MHz, 125MHz or 250MHz • VCO range 240MHz - 700MHz • Supports SSC downspread at and centerspread at and no spread options • Cycle-to-cycle jitter 70ps typical • Period jitter 40ps typical • Full 3.3V power supply mode • 0°C to 70°C ambient operating temperature • Available in both standard RoHS 5 and lead-free RoHS 6 packages nQ1 Q1 VDDO VDDA GND nQ0 BLOCK DIAGRAM OE Pullup 25MHz XTAL_IN OSC XTAL_OUT Phase Detector VCO 240-700MHz Feedback Divider ÷20 PIN ASSIGNMENT 0 PLL Bypass 0 1 ÷5 1 0 ÷4 1 ÷2 nc VDDO nc FSEL0 nc Q0 GND OE XTAL_OUT XTAL_IN OEB VDD SSC0 FSEL1 32 31 30 29 28 27 26 25 2 ICS844202-245 23 3 32-Lead VFQFN 22 4 5mm x 5mm x 0.75mm 21 package body TABLE ORDERING INFORMATION Part/Order Number Marking Package Shipping Packaging Temperature ICS844202BK-245 32 Lead VFQFN tray 0°C to 70°C ICS844202BK-245T 32 Lead VFQFN 2500 tape & reel 0°C to 70°C ICS844202BK-245LF ICS402B245L 32 Lead "Lead-Free" VFQFN tray 0°C to 70°C ICS844202BK-245LFT ICS402B245L 32 Lead "Lead-Free" VFQFN 2500 tape & reel 0°C to 70°C NOTE Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Incorporated IDT assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extneded temperature ranges, high reliability or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT / ICS LVDS PCI EXPRESS CLOCK SYNTHESIZER ICS844202-245 CRYSTAL-TO-LVDS PCI EXPRESS CLOCK SYNTHESIZER W/SPREAD SPECTRUM Innovate with IDT and accelerate your future networks. Contact: For Sales 800-345-7015 408-284-8200 Fax 408-284-2775 For Tech Support 480-763-2056 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 outside U.S. Asia Pacific and Japan Integrated Device Technology Singapore 1997 Pte. Ltd. Reg. No. 199707558G 435 Orchard Road #20-03 Wisma Atria Singapore 238877 +65 6 887 5505 Europe IDT Europe, Limited 321 Kingston Road Leatherhead, Surrey KT22 7TU England +44 0 1372 363 339 Fax +44 0 1372 378851 2007 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, the IDT logo, ICS and HiPerClockS are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA

PDF Datasheet Preview

CRYSTAL-TO-LVDS PCI EXPRESS CLOCK SYNTHESIZER W/SPREAD SPECTRUM

ICS844202-245

The ICS844202-245 is a 2 output PCI Express clock
synthesizer optimized to generate low jitter PCIe

HiPerClockS reference clocks with or without spread spectrum
modulation and is a member of the HiPerClockS
family of high performance clock solutions from IDT.

Spread type and amount can be configured via the SSC control
pins. Using a 25MHz, 18pF parallel resonant crystal, the device
will generate LVDS clocks at either 25MHz, 100MHz, 125MHz or
250MHz. The ICS844202-245 uses a low jitter VCO that easily
meets PCI Express jitter requirements and is packaged in a
32-pin VFQFN package.
• Two LVDS outputs at 25MHz, 100MHz, 125MHz or 250MHz
• Crystal oscillator interface, 25MHz, 18pF parallel resonant crystal
• Supports the following output frequencies 25MHz, 100MHz, 125MHz or 250MHz
• VCO range 240MHz - 700MHz
• Supports SSC downspread at and centerspread at and no spread options
• Cycle-to-cycle jitter 70ps typical
• Period jitter 40ps typical
• Full 3.3V power supply mode
• 0°C to 70°C ambient operating temperature
• Available in both standard RoHS 5 and lead-free RoHS 6 packages
nQ1 Q1

VDDO VDDA GND nQ0

BLOCK DIAGRAM

OE Pullup
25MHz XTAL_IN

OSC XTAL_OUT

Phase Detector

VCO 240-700MHz

Feedback Divider ÷20

PIN ASSIGNMENT
0 PLL Bypass 0 1 ÷5 1 0 ÷4 1 ÷2
nc VDDO nc FSEL0 nc Q0

GND OE XTAL_OUT XTAL_IN OEB VDD SSC0 FSEL1
32 31 30 29 28 27 26 25
2 ICS844202-245 23
3 32-Lead VFQFN 22
4 5mm x 5mm x 0.75mm 21
package body
TABLE ORDERING INFORMATION

Part/Order Number

Marking

Package

Shipping Packaging Temperature

ICS844202BK-245
32 Lead VFQFN
tray
0°C to 70°C

ICS844202BK-245T
32 Lead VFQFN
2500 tape & reel
0°C to 70°C

ICS844202BK-245LF

ICS402B245L
32 Lead "Lead-Free" VFQFN
tray
0°C to 70°C

ICS844202BK-245LFT

ICS402B245L
32 Lead "Lead-Free" VFQFN
2500 tape & reel
0°C to 70°C

NOTE Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant.

While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Incorporated IDT assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extneded temperature ranges, high reliability or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.

IDT / ICS LVDS PCI EXPRESS CLOCK SYNTHESIZER

ICS844202-245 CRYSTAL-TO-LVDS PCI EXPRESS CLOCK SYNTHESIZER W/SPREAD SPECTRUM

Innovate with IDT and accelerate your future networks. Contact:

For Sales
800-345-7015 408-284-8200 Fax 408-284-2775

For Tech Support
480-763-2056

Corporate Headquarters

Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 outside U.S.

Asia Pacific and Japan

Integrated Device Technology Singapore 1997 Pte. Ltd. Reg. No. 199707558G 435 Orchard Road #20-03 Wisma Atria Singapore 238877 +65 6 887 5505

Europe

IDT Europe, Limited 321 Kingston Road Leatherhead, Surrey KT22 7TU England +44 0 1372 363 339 Fax +44 0 1372 378851
2007 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, the IDT logo, ICS and HiPerClockS are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived 844202AKI-245LF Datasheet file may be downloaded here without warranties.

Datasheet ID: 844202AKI-245LF 637132