MK1705ALF

MK1705ALF Datasheet

MK1705A

Part	Datasheet
MK1705ALF	MK1705ALF (pdf)

Related Parts	Information
MK1705ALFTR	MK1705ALFTR

PDF Datasheet Preview
ATI LOW EMI CLOCK GENERATOR DATASHEET MK1705A The MK1705A generates a low EMI output clock from a clock or crystal input. The part is designed to dither the LCD interface clock or other clocks for ATI’s flat panel graphics controllers. The MK1705A uses IDT’s proprietary mixture of analog and digital Phase Locked Loop PLL technology to synthesize the frequency. It also uses IDT’s patented technique to spread the frequency spectrum of the output, thereby reducing the frequency amplitude peaks by several dB. The MK1705A is designed to have the output spread centered around the input frequency. Refer to the MK1704A for spreading down from the input frequency or the MK1714-0x for a crystal input and the widest selection of spread rates and multipliers. IDT offers many other clocks for computers and computer peripherals. Consult IDT when you need to remove crystals and oscillators from your board. Note When changing input frequency, the LEE pin must be set low for a minimum of 10µS to allow the PLL to lock to the new frequency. Alternatively, the PD pin maybe be set low while changing frequencies. • 8-pin SOIC package • Provides a spread spectrum output clock • Supports ATI’s flat panel controllers • Accepts a clock input, provides same frequency dithered output • Good for all VGA modes from 40 to 167 MHz • Peak reduction by 7 dB - 14 dB typical on 3rd - 19th odd harmonics • Low EMI feature can be disabled • Operating voltage of V or 5 V • Advanced, low power CMOS process Block Diagram 2 S1:0 Low EMI Enable Power Down Input Clock Input Buffer PLL Clock Synthesis and Spread Spectrum Circuitry IDT ATI LOW EMI CLOCK GENERATOR MK1705A MK1705A ATI LOW EMI CLOCK GENERATOR Pin Assignment ICLK 1 VDD 2 GND 3 CLK 4 8 PD 7 S0 6 S1 5 LEE 8 pin 150 mil SOIC SSCG Output Clock Selection Table S1 S0 pin 6 pin 7 Input/Output Range pin 1/pin 4 40 to 167 MHz 60 to 167 MHz Test 40 to 100 MHz Frequency Spread vs. CLK Test Center ±1% Pin Descriptions Pin Number 1 2 3 4 5 Pin Name ICLK VDD GND CLK Pin Type XI Power Output Input Input Input Ordering Information Part / Order Number MK1705A MK1705ATR MK1705ALF MK1705ATRLF Marking MK1705A MK1705AL 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 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 ATI LOW EMI CLOCK GENERATOR MK1705A MK1705A ATI LOW EMI CLOCK GENERATOR SSCG 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

ATI LOW EMI CLOCK GENERATOR

DATASHEET

MK1705A

The MK1705A generates a low EMI output clock from a clock or crystal input. The part is designed to dither the LCD interface clock or other clocks for ATI’s flat panel graphics controllers. The MK1705A uses IDT’s proprietary mixture of analog and digital Phase Locked Loop PLL technology to synthesize the frequency. It also uses IDT’s patented technique to spread the frequency spectrum of the output, thereby reducing the frequency amplitude peaks by several dB.

The MK1705A is designed to have the output spread centered around the input frequency. Refer to the MK1704A for spreading down from the input frequency or the MK1714-0x for a crystal input and the widest selection of spread rates and multipliers.

IDT offers many other clocks for computers and computer peripherals. Consult IDT when you need to remove crystals and oscillators from your board.

Note When changing input frequency, the LEE pin must be set low for a minimum of 10µS to allow the PLL to lock to the new frequency. Alternatively, the PD pin maybe be set low while changing frequencies.
• 8-pin SOIC package
• Provides a spread spectrum output clock
• Supports ATI’s flat panel controllers
• Accepts a clock input, provides same frequency dithered
output
• Good for all VGA modes from 40 to 167 MHz
• Peak reduction by 7 dB - 14 dB typical on 3rd - 19th odd
harmonics
• Low EMI feature can be disabled
• Operating voltage of V or 5 V
• Advanced, low power CMOS process

Block Diagram
2 S1:0 Low EMI Enable Power Down

Input Clock

Input Buffer

PLL Clock Synthesis and Spread Spectrum Circuitry

IDT ATI LOW EMI CLOCK GENERATOR

MK1705A

MK1705A ATI LOW EMI CLOCK GENERATOR

Pin Assignment

ICLK 1 VDD 2 GND 3 CLK 4
8 PD 7 S0 6 S1 5 LEE
8 pin 150 mil SOIC

SSCG

Output Clock Selection Table

S1 S0 pin 6 pin 7

Input/Output Range
pin 1/pin 4
40 to 167 MHz 60 to 167 MHz

Test 40 to 100 MHz

Frequency Spread vs. CLK

Test Center ±1%

Pin Descriptions

Pin Number
1 2 3 4 5

Pin Name ICLK VDD GND CLK

Pin Type

XI Power Output Input

Input

Input
Ordering Information

Part / Order Number

MK1705A MK1705ATR MK1705ALF MK1705ATRLF

Marking

MK1705A MK1705AL

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

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 ATI LOW EMI CLOCK GENERATOR

MK1705A

MK1705A ATI LOW EMI CLOCK GENERATOR

SSCG

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 MK1705ALF Datasheet file may be downloaded here without warranties.

Datasheet ID: MK1705ALF 637441