mk1709 Integrated Device Technology, mk1709 Datasheet

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mk1709

Manufacturer Part Number
mk1709
Description
Low Emi Clock Generator
Manufacturer
Integrated Device Technology
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
mk1709S
Manufacturer:
HYUNDAI
Quantity:
480
Part Number:
mk1709S
Manufacturer:
UCLOCK
Quantity:
20 000
LOW EMI CLOCK GENERATOR
Description
The MK1709 generates a low EMI output clock from a clock
input. The part is designed to dither the LCD interface clock
for flat panel graphics controllers. The device uses ICS’
proprietary mix of analog and digital Phase Locked Loop
(PLL) technology to spread the frequency spectrum of the
output, thereby reducing the frequency amplitude peaks by
several dB.
The MK1709 offers centered spread from a high speed
clock input. Refer to the MK1714-01/02 for a crystal input
and the widest selection of input frequencies and
multipliers.
ICS offers many other clocks for computers and computer
peripherals. Consult us when you need to remove crystals
and oscillators from your board.
Block Diagram
IDT™ / ICS™ LOW EMI CLOCK GENERATOR
Low EMI Enable
ICLK
S0
S1
S2
Buffer
Input
1
GND
VDD
Features
and Spread
Packaged in 8-pin SOIC (MK1709S) and in 8-pin TSSOP
(MK1709AG)
Available in lead (Pb) free package
Provides a spread spectrum output clock
Supports flat panel controllers
Guaranteed to +85°C operation
Accepts a clock input, provides same frequency dithered
output
Good for all VGA modes from 40 to 167 MHz
Peak reduction by 7dB - 14dB typical on 3rd - 19th odd
harmonics
Low EMI feature can be disabled
Includes power-down
Operating voltage of 3.3 V
Advanced, low-power CMOS process
PLL Clock
Synthesis
Spectrum
Circuitry
Clock Out
MK1709
DATASHEET
MK1709
REV H 070506

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mk1709 Summary of contents

Page 1

... LOW EMI CLOCK GENERATOR Description The MK1709 generates a low EMI output clock from a clock input. The part is designed to dither the LCD interface clock for flat panel graphics controllers. The device uses ICS’ proprietary mix of analog and digital Phase Locked Loop ...

Page 2

... MK1709 LOW EMI CLOCK GENERATOR Pin Assignment ICLK 1 VDD 2 GND 3 CLK 4 8-pin SOIC (MK1709S) GND 1 CLK 2 LEE 8-pin TSSOP (MK1709AG) IDT™ / ICS™ LOW EMI CLOCK GENERATOR Spread Percentage and Direction Select Table Pin 8 (1709S Pin 6 ...

Page 3

... Function select 0 input. Selects spread amount and direction per table above. Internal mid-level. Function select 1 input. Selects spread amount and direction per table above. Internal mid-level. Function select 2 input. Selects spread amount and direction per table above. Connect to graphics input clock. Connect to +3 SSCG MK1709 REV H 070506 ...

Page 4

... Decoupling Capacitor A decoupling capacitor of 0.01µF must be connected between VDD and GND on pins 2 and 3 for the MK1709S, or pins 1 and 8 for the MK1709AG. Place the capacitor as close to these pins as possible. For optimum device performance, the decoupling capacitor should be mounted on the component side of the PCB. Avoid the use of vias in the decoupling circuit ...

Page 5

... LOW EMI CLOCK GENERATOR Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK1709. These ratings, which are standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. ...

Page 6

... MHz - 150 MHz Time above 1.5 V, >150 MHz t 0 2.0 to 0.8V OF 3rd - 19th odd harmonics 6 Min. Typ. Max. Units 80 167 MHz 1 Min. Typ. Max. Units 25 165 MHz 1 MK1709 REV H 070506 SSCG ...

Page 7

... Lot number and country of origin Millimeters Min Max Min A 1.35 1.75 .0532 A1 0.10 0.25 .0040 B 0.33 0.51 .013 C 0.19 0.25 .0075 D 4.80 5.00 .1890 E 3.80 4.00 .1497 e 1.27 BASIC 0.050 BASIC H 5.80 6.20 .2284 h 0.25 0.50 .010 L 0.40 1.27 .016 α 0 ° 8 ° 0 ° MK1709 SSCG 8 5 Inches Max .0688 .0098 .020 .0098 .1968 .1574 .2440 .020 .050 8 ° C REV H 070506 ...

Page 8

... MK1709SLF MK1709SLFTR (see page 7) MK1709AG MK1709AGTR MK1709AGLF MK1709AGLFTR 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 Circuit Systems (ICS) 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 ...

Page 9

... MK1709 LOW EMI CLOCK GENERATOR Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 (outside U.S.) © ...

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