844N234AKILF

844N234AKILF Datasheet

ICS844N234I

Part	Datasheet
844N234AKILF	844N234AKILF (pdf)

Related Parts	Information
844N234AKILFT	844N234AKILFT

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NG CRYSTAL-TO-LVDS CLOCK SYNTHESIZER ICS844N234I PRELIMINARY DATA SHEET The ICS844N234I is a 4-output clock synthesizer designed for SRIO and reference clock applications. The device generates four copies of a selectable 100MHz, 312.5MHz, 156.25MHz or 125MHz clock signals with excellent phase jitter performance. The four outputs are organized in two banks of two LVDS ouputs.The device uses IDT’s fourth generation NG technology for an optimum of high clock frequency and low phase noise performance, combined with low power consumption and high power supply noise rejection. The synthesized clock frequency and the phase-noise performance are optimized for driving SRIO and SerDes reference clocks. The device supports 3.3V and 2.5V voltage supplies and is packaged in a small, lead-free RoHS 6 32-lead VFQFN package. The extended temperature range supports wireless infrastructure, telecommunication and networking end equipment requirements. Block Diagram • 4TH generation NG technology • Selectable 100MHz, 312.5MHz, 156.25MHz or 125MHz output clock synthesized from a 31.25MHz fundamental mode crystal • Four differential LVDS clock outputs • Selectable 31.25MHz crystal interface or external reference clock • RMS phase jitter 156.25MHz, using a 31.25MHz crystal 1MHz - 20MHz 0.15ps typical • RMS phase jitter 156.25MHz, using a 31.25MHz crystal 12kHz - 20MHz 0.26ps typical • LVCMOS interface levels for the frequency select input • Full 3.3V or 2.5V supply voltage • Lead-free RoHS 6 32-lead VFQFN package • -40°C to 85°C ambient operating temperature XTAL_IN XTAL_OUT REF_CLK REF_SEL nBYPASS FSELA[1:0] FSELB[1:0] OEA OEB OSC 0 Pulldown Pulldown Pullup Pulldown Pullup, Pulldown 2 Pullup Pullup Pulldown PFD & NG VCO 1960-2550MHz ÷80 ÷NA QA0 nQA0 1Pin Assignment QA1 nQA1 QB0 ÷NB nQB0 QB1 nQB1 XTAL_IN XTAL_OUT REF_SEL REF_CLK MR nBYPASS VDDA Ordering Information Table Ordering Information Part/Order Number 844N234AKILF 844N234AKILFT Marking ICS4N234AIL Package Lead-Free, 32 Lead VFQFN Lead-Free, 32 Lead VFQFN Shipping Packaging Tray 2500 Tape & Reel Temperature -40°C to 85°C -40°C to 85°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 IDT 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. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial and industrial applications. Any other applications, such as those requiring 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. ICS844N234AKILF FEBRUARY 8, 2012 2012 Integrated Device Technology, Inc. ICS844N234I Preliminary Data Sheet FEMTOCLOCK CRYSTAL-TO-LVDS CLOCK SYNTHESIZER We’ve Got Your Timing Solution 6024 Silver Creek Valley Road San Jose, California 95138 Sales 800-345-7015 inside USA +408-284-8200 outside USA Fax 408-284-2775 Technical Support +480-763-2056 DISCLAIMER Integrated Device Technology, Inc. IDT and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT’s sole discretion. All information in this document, including descriptions of product features and performance, is subject to change without notice. Performance specifications and the operating parameters of the described products are determined in the independent state and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT’s products for any particular purpose, an implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property rights of IDT or any third parties. IDT’s products are not intended for use in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT. Integrated Device Technology, IDT and the IDT logo are registered trademarks of IDT. Other trademarks and service marks used herein, including protected names, logos and designs, are the property of IDT or their respective third party owners. Copyright All rights reserved.

PDF Datasheet Preview

NG CRYSTAL-TO-LVDS CLOCK SYNTHESIZER

ICS844N234I

PRELIMINARY DATA SHEET

The ICS844N234I is a 4-output clock synthesizer designed for SRIO and reference clock applications. The device generates four copies of a selectable 100MHz, 312.5MHz, 156.25MHz or 125MHz clock signals with excellent phase jitter performance. The four outputs are organized in two banks of two LVDS ouputs.The device uses IDT’s fourth generation NG technology for an optimum of high clock frequency and low phase noise performance, combined with low power consumption and high power supply noise rejection. The synthesized clock frequency and the phase-noise performance are optimized for driving SRIO and SerDes reference clocks. The device supports 3.3V and 2.5V voltage supplies and is packaged in a small, lead-free RoHS 6 32-lead VFQFN package. The extended temperature range supports wireless infrastructure, telecommunication and networking end equipment requirements.

Block Diagram
• 4TH generation NG technology
• Selectable 100MHz, 312.5MHz, 156.25MHz or 125MHz output
clock synthesized from a 31.25MHz fundamental mode crystal
• Four differential LVDS clock outputs
• Selectable 31.25MHz crystal interface or external reference clock
• RMS phase jitter 156.25MHz, using a 31.25MHz crystal
1MHz - 20MHz 0.15ps typical
• RMS phase jitter 156.25MHz, using a 31.25MHz crystal
12kHz - 20MHz 0.26ps typical
• LVCMOS interface levels for the frequency select input
• Full 3.3V or 2.5V supply voltage
• Lead-free RoHS 6 32-lead VFQFN package
• -40°C to 85°C ambient operating temperature

XTAL_IN

XTAL_OUT

REF_CLK

REF_SEL nBYPASS FSELA[1:0] FSELB[1:0]

OEA OEB

OSC 0

Pulldown

Pulldown

Pullup

Pulldown

Pullup, Pulldown 2

Pullup

Pullup

Pulldown

PFD &

NG VCO
1960-2550MHz
÷80
÷NA

QA0 nQA0
1Pin Assignment

QA1 nQA1

QB0
÷NB
nQB0

QB1 nQB1

XTAL_IN XTAL_OUT REF_SEL REF_CLK MR
nBYPASS

VDDA
Ordering Information
Table Ordering Information

Part/Order Number 844N234AKILF 844N234AKILFT

Marking ICS4N234AIL

Package Lead-Free, 32 Lead VFQFN Lead-Free, 32 Lead VFQFN

Shipping Packaging Tray
2500 Tape & Reel

Temperature -40°C to 85°C -40°C to 85°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 IDT 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. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial and industrial applications. Any other applications, such as those requiring 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.

ICS844N234AKILF FEBRUARY 8, 2012
2012 Integrated Device Technology, Inc.

ICS844N234I Preliminary Data Sheet

FEMTOCLOCK CRYSTAL-TO-LVDS CLOCK SYNTHESIZER

We’ve Got Your Timing Solution
6024 Silver Creek Valley Road San Jose, California 95138

Sales
800-345-7015 inside USA +408-284-8200 outside USA Fax 408-284-2775

Technical Support
+480-763-2056

DISCLAIMER Integrated Device Technology, Inc. IDT and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT’s sole discretion. All information in this document, including descriptions of product features and performance, is subject to change without notice. Performance specifications and the operating parameters of the described products are determined in the independent state and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT’s products for any particular purpose, an implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property rights of IDT or any third parties.

IDT’s products are not intended for use in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT.

Integrated Device Technology, IDT and the IDT logo are registered trademarks of IDT. Other trademarks and service marks used herein, including protected names, logos and designs, are the property of IDT or their respective third party owners.

Copyright All rights reserved.

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Datasheet ID: 844N234AKILF 637137