MK2761AS

MK2761AS Datasheet

MK2761A

Part	Datasheet
MK2761AS	MK2761AS (pdf)

Related Parts	Information
MK2761ASTR	MK2761ASTR

PDF Datasheet Preview
SET-TOP CLOCK SOURCE DATASHEET MK2761A The MK2761A is a low-cost, low-jitter, high-performance clock synthesizer for set-top box applications. Using analog Phase-Locked Loop PLL techniques, the device accepts a 27 MHz crystal or clock input to produce multiple output clocks including the processor clock, the UART clock, a selectable audio clock, and four low skew copies of the 27 MHz. The audio clocks are frequency-locked to the 27 MHz using our patented zero ppm error techniques. This allows audio and video to track exactly, thereby eliminating the need for large buffer memory. IDT manufactures a large variety of Set-top Box and multimedia clock synthesizers for all applications. Consult IDT to eliminate crystals and oscillators from your board. • Packaged in a 16-pin narrow 150 mil SOIC • Available in Pb lead free package • Selectable audio sampling frequencies support 32, and 48 kHz in most DACs • 27 MHz crystal or clock input • Processor frequency of MHz • Fixed clocks of 27 and MHz • Zero ppm in audio clocks exactly track video frequency • 25 mA output drive capability at TTL levels • Advanced, low-power, sub-micron CMOS process • Operating voltage of V ±10% NOTE EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Block Diagram VDD 2 ACS1:0 MHz crystal or clock Crystal Ocsillator Clock Synthesis and Control Circuitry 3 GND Audio Clock MHz IDT SET-TOP CLOCK SOURCE MK2761A MK2761A SET-TOP CLOCK SOURCE Pin Assignment ACS1 1 X2 2 X1/ICLK 3 VDD 4 GND 5 MHz 6 MHz 7 ACLK 8 16 ACS0 15 27 MHz 14 27 MHz 13 VDD 12 GND 11 27 MHz 10 27 MHz 9 GND 16-pin 150 mil SOIC CLOCK SYNTHESIZER Audio Clock MHz DecodingTable ACS1 ACS0 0 1 0 1 ACLK Pin Descriptions Pin Number 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name ACS1 X1/ICLK VDD GND 16.67M 3.68M ACLK GND 27M GND VDD 27M ACS0 Pin Type Pin Description Ordering Information Part / Order Number MK2761AS* MK2761ASTR* MK2761ASLF MK2761ASLFTR Marking see page 5 Shipping Packaging Tubes Tape and Reel Tubes Tape and Reel Package 16-pin SOIC 16-pin SOIC 16-pin SOIC 16-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 SET-TOP CLOCK SOURCE MK2761A MK2761A SET-TOP CLOCK SOURCE CLOCK SYNTHESIZER Innovate with IDT and accelerate your future networks. Contact: For Sales 800-345-7015 408-284-8200 Fax 408-284-2775 For Tech Support 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

SET-TOP CLOCK SOURCE

DATASHEET

MK2761A

The MK2761A is a low-cost, low-jitter, high-performance clock synthesizer for set-top box applications. Using analog Phase-Locked Loop PLL techniques, the device accepts a 27 MHz crystal or clock input to produce multiple output clocks including the processor clock, the UART clock, a selectable audio clock, and four low skew copies of the 27 MHz. The audio clocks are frequency-locked to the 27 MHz using our patented zero ppm error techniques. This allows audio and video to track exactly, thereby eliminating the need for large buffer memory.

IDT manufactures a large variety of Set-top Box and multimedia clock synthesizers for all applications. Consult IDT to eliminate crystals and oscillators from your board.
• Packaged in a 16-pin narrow 150 mil SOIC
• Available in Pb lead free package
• Selectable audio sampling frequencies support 32,
and 48 kHz in most DACs
• 27 MHz crystal or clock input
• Processor frequency of MHz
• Fixed clocks of 27 and MHz
• Zero ppm in audio clocks exactly track video frequency
• 25 mA output drive capability at TTL levels
• Advanced, low-power, sub-micron CMOS process
• Operating voltage of V ±10%

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

Block Diagram

VDD 2

ACS1:0 MHz crystal or clock

Crystal Ocsillator

Clock Synthesis and

Control Circuitry
3 GND

Audio Clock MHz

IDT SET-TOP CLOCK SOURCE

MK2761A

MK2761A SET-TOP CLOCK SOURCE

Pin Assignment

ACS1 1 X2 2

X1/ICLK 3 VDD 4 GND 5

MHz 6 MHz 7

ACLK 8
16 ACS0 15 27 MHz 14 27 MHz 13 VDD 12 GND 11 27 MHz 10 27 MHz 9 GND
16-pin 150 mil SOIC

CLOCK SYNTHESIZER

Audio Clock MHz DecodingTable

ACS1

ACS0
0 1 0 1

ACLK

Pin Descriptions

Pin Number
3 4 5 6 7 8 9 10 11 12 13 14 15 16

Pin Name ACS1

X1/ICLK VDD GND
16.67M 3.68M ACLK GND 27M GND VDD 27M ACS0

Pin Type

Pin Description
Ordering Information

Part / Order Number

MK2761AS* MK2761ASTR* MK2761ASLF MK2761ASLFTR

Marking
see page 5

Shipping Packaging

Tubes Tape and Reel

Tubes Tape and Reel

Package
16-pin SOIC 16-pin SOIC 16-pin SOIC 16-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 SET-TOP CLOCK SOURCE

MK2761A

MK2761A SET-TOP CLOCK SOURCE

CLOCK SYNTHESIZER

Innovate with IDT and accelerate your future networks. Contact:

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

For Tech Support

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 MK2761AS Datasheet file may be downloaded here without warranties.

Datasheet ID: MK2761AS 637470