ICS728M

ICS728M Datasheet

ICS728

Part	Datasheet
ICS728M	ICS728M (pdf)

Related Parts	Information
ICS728MT	ICS728MT

PDF Datasheet Preview
LOW COST 27 MHZ VOLT VCXO DATASHEET ICS728 The ICS728 combines the functions of a VCXO Voltage Controlled Crystal Oscillator and PLL Phase Locked Loop frequency doubler onto a single chip. Used in conjunction with an external pullable quartz crystal, this monolithic integrated circuit replaces more costly hybrid canned VCXO devices. The ICS728 is designed primarily for data and clock recovery applications within end products such as set-top box receivers. The ICS728 exhibits a moderate VCXO gain of 110 ppm/V typical, when used with a high quality external pullable quartz crystal. The frequency of the on-chip VCXO is adjusted by an external control voltage input into pin VIN. Because VIN is a high impedance input, it can be driven directly from an PWM RC integrator circuit. Frequency output increases with VIN voltage input. The usable range of VIN is 0 to V. • Ideal for set-top box applications using MHz external pullable crystal to generate lock 27 MHz clock transport video clock • On-chip VCXO with guaranteed pull range of ±110 ppm minimum • VCXO input tuning voltage 0 to V • Packaged in 8-pin SOIC 150 mil wide • Available in Pb lead free package NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Block Diagram MHz X1 Pullable Crystal X2 Voltage Controlled Crystal Oscillator PLL Frequency Doubler 27 MHz 2x Crystal Frequency IDT / ICS LOW COST 27 MHZ VOLT VCXO ICS728 ICS728 LOW COST 27 MHZ VOLT VCXO Pin Assignment X1 1 VDD 2 VIN 3 GND 4 8 X2 7 GND 6 DC 5 CLK 8-pin 150 mil SOIC VCXO Pin Descriptions Pin Number 4 5 6 7 8 Pin Name XI VDD VIN GND CLK DC GND X2 Pin Type Pin Description Input Crystal connection. Connect to the external pullable crystal. Power Connect to V 0.01uf decoupling capacitor recommended . Input Voltage input to VCXO. Zero to V analog input which controls the oscillation frequency of the VCXO. Power Connect to ground. Output Clock output. __ Do not connect to this pin Ordering Information A1 -C- SEATING PLANE h x 45 Part / Order Number 728M* 728MT* 728MLF 728MLFT Marking see page 6 Shipping Packaging Tubes Tape and Reel Tubes Tape and Reel Package 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC Temperature 0 to +70° C 0 to +70° C 0 to +70° C 0 to +70° C *NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Parts that are ordered with a “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 range, 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 LOW COST 27 MHZ VOLT VCXO ICS728 ICS728 LOW COST 27 MHZ VOLT VCXO Originator J. Sarma J. Sarma Date 12/14/04 01/25/05 11/04/09 Description of Change Release from Prelim to Final release as General purpose device. Add marking diagrams add LF. Added EOL note for non-green parts. VCXO IDT / ICS LOW COST 27 MHZ VOLT VCXO ICS728 ICS728 LOW COST 27 MHZ VOLT VCXO VCXO Innovate with IDT and accelerate your future networks. Contact: For Sales 800-345-7015 408-284-8200 Fax 408-284-2775 For Tech Support ww.idt.com/go/clockhelp Corporate Headquarters Integrated Device Technology, Inc. 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo 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

LOW COST 27 MHZ VOLT VCXO

DATASHEET

ICS728

The ICS728 combines the functions of a VCXO Voltage Controlled Crystal Oscillator and PLL Phase Locked Loop frequency doubler onto a single chip. Used in conjunction with an external pullable quartz crystal, this monolithic integrated circuit replaces more costly hybrid canned VCXO devices. The ICS728 is designed primarily for data and clock recovery applications within end products such as set-top box receivers.

The ICS728 exhibits a moderate VCXO gain of 110 ppm/V typical, when used with a high quality external pullable quartz crystal.

The frequency of the on-chip VCXO is adjusted by an external control voltage input into pin VIN. Because VIN is a high impedance input, it can be driven directly from an PWM RC integrator circuit. Frequency output increases with VIN voltage input. The usable range of VIN is 0 to V.
• Ideal for set-top box applications using MHz external
pullable crystal to generate lock 27 MHz clock transport video clock
• On-chip VCXO with guaranteed pull range of ±110 ppm
minimum
• VCXO input tuning voltage 0 to V
• Packaged in 8-pin SOIC 150 mil wide
• Available in Pb lead free package

NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01

Block Diagram

MHz X1 Pullable Crystal X2

Voltage Controlled

Crystal Oscillator

PLL Frequency

Doubler
27 MHz 2x Crystal Frequency

IDT / ICS LOW COST 27 MHZ VOLT VCXO

ICS728

ICS728 LOW COST 27 MHZ VOLT VCXO

Pin Assignment

X1 1 VDD 2 VIN 3 GND 4
8 X2 7 GND 6 DC 5 CLK
8-pin 150 mil SOIC

VCXO

Pin Descriptions

Pin Number
4 5 6 7 8

Pin Name

XI VDD VIN

GND CLK DC GND X2

Pin Type

Pin Description

Input Crystal connection. Connect to the external pullable crystal.

Power Connect to V 0.01uf decoupling capacitor recommended .

Input Voltage input to VCXO. Zero to V analog input which controls the oscillation frequency of the VCXO.

Power Connect to ground.

Output Clock output.
__ Do not connect to this pin
Ordering Information

A1 -C-

SEATING PLANE
h x 45

Part / Order Number
728M* 728MT* 728MLF 728MLFT

Marking
see page 6

Shipping Packaging

Tubes Tape and Reel

Tubes Tape and Reel

Package
8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC

Temperature
0 to +70° C 0 to +70° C 0 to +70° C 0 to +70° C
*NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01

Parts that are ordered with a “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 range, 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 LOW COST 27 MHZ VOLT VCXO

ICS728

ICS728 LOW COST 27 MHZ VOLT VCXO

Originator J. Sarma J. Sarma

Date 12/14/04 01/25/05 11/04/09

Description of Change Release from Prelim to Final release as General purpose device. Add marking diagrams add LF. Added EOL note for non-green parts.

VCXO

IDT / ICS LOW COST 27 MHZ VOLT VCXO

ICS728

ICS728 LOW COST 27 MHZ VOLT VCXO

VCXO

Innovate with IDT and accelerate your future networks. Contact:

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

For Tech Support
ww.idt.com/go/clockhelp

Corporate Headquarters

Integrated Device Technology, Inc.
2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo 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 ICS728M Datasheet file may be downloaded here without warranties.

Datasheet ID: ICS728M 637070