mk1707 Integrated Device Technology, mk1707 Datasheet

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mk1707

Manufacturer Part Number
mk1707
Description
Low Emi Clock Generator
Manufacturer
Integrated Device Technology
Datasheet

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LOW EMI CLOCK GENERATOR
Description
The MK1707 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 MK1707 offers both centered and down 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
Spread Direction
Low EMI Enable
ICLK
S1:0
2
Buffer
Input
1
GND
VDD
Features
and Spread
PLL Clock
Packaged in 8-pin SOIC
Available in Pb-free package
Industrial temperature range available
Provides a spread spectrum output clock
Supports ATI’s flat panel controllers
Guaranteed to +85°C operation
Accepts a clock input, provides same frequency dithered
output
Good for all VGA modes from 80 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 or 5 V
Advanced, low-power CMOS process
Synthesis
Spectrum
Circuitry
Clock Out
MK1707
DATASHEET
MK1707
REV G 032204

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mk1707 Summary of contents

Page 1

... LOW EMI CLOCK GENERATOR Description The MK1707 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

... M 0 Down Center 1 M Down 1 1 Power Down 1 0 Center 0 M Center 0 1 Center 0 0 Center M M Center M 1 Center M 0 Test 1 M Center 1 1 Power Down 1 MK1707 SSCG Spread 0.6 0.8 1.25 +0.5, -1.5 2 +0.5, -2.5 +0. ±0.35 ±0.5 ±0.7 ±0.8 ±1.1 ±1.4 Test ±2.5 - REV G 032204 ...

Page 3

... An input signal should not be applied to ICLK until VDD is stable (within 10% of its final value). This requirement can easily be met by operating the MK1707 and then ICLK source from the same power supply. 2. LEE should not be enabled (taken high) until after the power supplies and input clock are stable ...

Page 4

... LOW EMI CLOCK GENERATOR Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK1707. 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 5

... Symbol Conditions θ Still air JA θ 1 m/s air flow JA θ 3 m/s air flow JA θ Min. Typ. Max. Units 80 167 MHz 1 kHz Min. Typ. Max. Units ° C/W 150 ° C/W 140 ° C/W 120 ° C/W 40 MK1707 REV G 032204 SSCG ...

Page 6

... MK1707SI MK1707SI MK1707SITR MK1707SI MK1707SLF MK1707SL MK1707SLFTR MK1707SL MK1707SILF MK1707SIL MK1707SILFTR MK1707SIL Note: “LF” denotes Pb (lead) free package. 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. No other circuits, patents, or licenses are implied ...

Page 7

... MK1707 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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