843312AKLFT

843312AKLFT Datasheet

ICS843312

Part	Datasheet
843312AKLFT	843312AKLFT (pdf)

Related Parts	Information
843312AKLF	843312AKLF

PDF Datasheet Preview
Crystal-to-LVPECL Clock Synthesizer ICS843312 DATA SHEET The ICS843312 is a high frequency clock generator. The ICS843312 uses an external 25MHz crystal to synthesize 312.5MHz and 125MHz clocks. The ICS843312 has excellent RMS period jitter performance. The ICS843312 operates at full 3.3V and 2.5V, or mixed 3.3V/2.5V supply modes and is available in a fully RoHS compliant 32-lead VFQFN package. Output Frequency Table • Ten differential LVPECL outputs for 312.5MHz and 125MHz • Crystal oscillator interface designed for 18pF, 25MHz parallel resonant crystal • RMS phase jitter at 125MHz 1.875MHz - 20MHz : 0.45ps typical • RMS phase jitter at 312.5MHz 1.875MHz - 20MHz : 0.31ps typical • Output duty cycle 45% 55%, at 125MHz • Full 3.3V and 2.5V, or mixed 3.3V/2.5V supply modes • 0°C to 70°C ambient operating temperature • Available in lead-free RoHS 6 package Crystal Frequency MHz Feedback Divider VCO Frequency MHz Output Divider Output Frequency MHz Block Diagram BYPASS Pulldown TEST_CLK Pulldown 25MHz XTAL_IN XTAL_OUT Phase Detector 625MHz 6 ÷5 QA[0:5] nQA[0:5] Pin Assignment SELB Pulldown M = ÷25 2 ÷2, ÷5 2 ÷2 QB[0:1] nQB[0:1] QC[0:1] nQC[0:1] VCC TEST_CLK SELB BYPASS VCCA QA0 nQA0 VCCO 32 31 30 29 28 27 26 25 XTAL_IN 1 24 QA1 XTAL_OUT VCC nQC1 QC1 nQC0 QC0 2 ICS843312 23 32 VFQFN 4 5mm x 5mm x 0.925mm 21 Ordering Information Table Ordering Information Part/Order Number Marking Package Shipping Packaging Temperature 843312AKLF ICS843312AL “Lead-Free” 32 Lead VFQFN Tray 0°C to 70°C 843312AKLFT ICS843312AL “Lead-Free” 32 Lead 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 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 applications. Any other applications, such as those requiring extended 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. 2010 Integrated Device Technology, Inc. ICS843312 Data Sheet CRYSTAL-TO-LVPECL CLOCK SYNTHESIZER Table T6A - T6C B 1 5 10 17 Description of Change Block Diagram - added outline to distinguish crystal oscillator is inside the part. AC Characteristics Tables - added Output Duty Cycle spec for 312.5MHz. Updated Overdriving the XTAL Interface. Updated Package Outline. Date 9/28/10 2010 Integrated Device Technology, Inc. ICS843312 Data Sheet CRYSTAL-TO-LVPECL 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

Crystal-to-LVPECL Clock Synthesizer

ICS843312

DATA SHEET

The ICS843312 is a high frequency clock generator. The ICS843312 uses an external 25MHz crystal to synthesize 312.5MHz and 125MHz clocks. The ICS843312 has excellent RMS period jitter performance. The ICS843312 operates at full 3.3V and 2.5V, or mixed 3.3V/2.5V supply modes and is available in a fully RoHS compliant 32-lead VFQFN package.

Output Frequency Table
• Ten differential LVPECL outputs for 312.5MHz and 125MHz
• Crystal oscillator interface designed for 18pF, 25MHz parallel
resonant crystal
• RMS phase jitter at 125MHz 1.875MHz - 20MHz :
0.45ps typical
• RMS phase jitter at 312.5MHz 1.875MHz - 20MHz :
0.31ps typical
• Output duty cycle 45% 55%, at 125MHz
• Full 3.3V and 2.5V, or mixed 3.3V/2.5V supply modes
• 0°C to 70°C ambient operating temperature
• Available in lead-free RoHS 6 package

Crystal Frequency MHz Feedback Divider

VCO Frequency MHz

Output Divider Output Frequency MHz

Block Diagram

BYPASS Pulldown

TEST_CLK Pulldown
25MHz

XTAL_IN

XTAL_OUT

Phase Detector
625MHz
6 ÷5

QA[0:5] nQA[0:5]

Pin Assignment

SELB Pulldown

M = ÷25
2 ÷2, ÷5
2 ÷2

QB[0:1] nQB[0:1]

QC[0:1] nQC[0:1]

VCC TEST_CLK SELB BYPASS VCCA QA0 nQA0 VCCO
32 31 30 29 28 27 26 25

XTAL_IN 1
24 QA1

XTAL_OUT VCC
nQC1 QC1 nQC0 QC0
2 ICS843312 23
32 VFQFN
4 5mm x 5mm x 0.925mm 21
Ordering Information
Table Ordering Information

Part/Order Number

Marking

Package

Shipping Packaging

Temperature
843312AKLF

ICS843312AL
“Lead-Free” 32 Lead VFQFN

Tray
0°C to 70°C
843312AKLFT

ICS843312AL
“Lead-Free” 32 Lead 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 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 applications. Any other applications, such as those requiring extended 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.
2010 Integrated Device Technology, Inc.

ICS843312 Data Sheet

CRYSTAL-TO-LVPECL CLOCK SYNTHESIZER

Table

T6A - T6C B
1 5 10 17

Description of Change

Block Diagram - added outline to distinguish crystal oscillator is inside the part. AC Characteristics Tables - added Output Duty Cycle spec for 312.5MHz. Updated Overdriving the XTAL Interface. Updated Package Outline.

Date 9/28/10
2010 Integrated Device Technology, Inc.

ICS843312 Data Sheet

CRYSTAL-TO-LVPECL 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.

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 843312AKLFT Datasheet file may be downloaded here without warranties.

Datasheet ID: 843312AKLFT 637121