MK1709 generates output clock from clock input. part designed dither i

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MK1709 generates output clock from clock input. part designed dither i

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MK1709
MK1709 generates output clock from clock input. part designed dither interface clock flat panel graphics controllers. device uses ICS' proprietary analog digital Phase Locked Loop (PLL) technology spread frequency spectrum output, thereby reducing frequency amplitude peaks several MK1709 offers centered spread from high speed clock input. Refer MK1714-01/02 crystal input widest selection input frequencies multipliers. offers many other clocks computers computer peripherals. Consult when need remove crystals oscillators from your board.
Features
Packaged 8-pin SOIC (MK1709S) 8-pin
TSSOP (MK1709AG)
8-pin TSSOP available lead (Pb) free package Provides spread spectrum output clock Supports flat panel controllers Guaranteed +85°C operation Accepts clock input, provides same frequency dithered output
Good modes from Peak reduction 14dB typical 19th
harmonics
feature disabled Includes power-down Operating voltage Advanced, low-power CMOS process
Block Diagram
Enable Clock Synthesis Spread Spectrum Circuitry Input Buffer
Clock
ICLK
1709 Integrated Circuit Systems, Inc.
Race Street, Jose, 95126
Revision 031204 (408) 297-1201
www.icst.com
MK1709
Assignment
ICLK
Spread Percentage Direction Select Table
(1709S) (1709AG) (1709S) (1709AG) (1709S) (1709AG) Frequency Spread Range Percentage
8-pin SOIC (MK1709S)
40-50 40-50 40-50 (MK1709S) 25-50 (MK1709AG) 40-50 (MK1709S) 25-50 (MK1709AG) 40-50 -100 -100 -100 Power Down -100 -100 100-165 100-165 100-165 100-165 100-165 100-165 Power Down
±0.9 ±0.7 ±0.8
ICLK
±0.6
8-pin TSSOP (MK1709AG)
±1.1 ±0.6 ±0.7 ±0.8 ±0.9 ±1.1 ±0.7 ±0.6 ±1.1 ±1.35 ±0.8 ±0.9
connect unconnected (floating) internal Pull resistor considered state connect directly
1709 Integrated Circuit Systems, Inc.
Race Street, Jose, 95126
Revision 031204 (408) 297-1201
www.icst.com
MK1709
Descriptions (MK1709S)
Number Name Type
ICLK
Input Power Power Output Input Input Input Input
Connect graphics input clock. Connect +3.3 Connect ground. Spread spectrum clock output table above. enable. Turns spread spectrum when high. Internal pull-up resistor. Function select input. Selects spread amount direction table above. Internal mid-level. Function select input. Selects spread amount direction table above. Internal mid-level. Function select input. Selects spread amount direction table above.
Descriptions (MK1709AG)
Number Name Type
ICLK
Power Output Input Input Input Input Input Power
Connect ground. Spread spectrum clock output table above. enable. Turns spread spectrum when high. Internal pull-up resistor. Function select input. Selects spread amount direction table above. Internal mid-level. Function select input. Selects spread amount direction table above. Internal mid-level. Function select input. Selects spread amount direction table above. Connect graphics input clock. Connect +3.3
1709 Integrated Circuit Systems, Inc.
Race Street, Jose, 95126
Revision 031204 (408) 297-1201
www.icst.com
MK1709
External Components
MK1709 requires minimum number external components proper operation.
layout Recommendations
optimum device performance lowest output phase noise, following guidelines should observed. 0.01µF decoupling capacitor should mounted component side board close possible. vias should used between decoupling capacitor pin. trace should kept short possible, should trace ground via. Place series termination resistor needed) close clock output minimize EMI. optimum layout with components same side board, minimizing vias through other signal layers. Other signal traces should routed away from MK1709. This includes signal traces just underneath device, layers adjacent ground plane layer used device.
Decoupling Capacitor
decoupling capacitor 0.01µF must connected between pins MK1709S, pins MK1709AG. Place capacitor close these pins possible. optimum device performance, decoupling capacitor should mounted component side PCB. Avoid vias decoupling circuit.
Series Termination Resistor
When trace between clock output load over inch, series termination should used. series terminate trace commonly used trace impedance), place resistor series with clock line, close clock output possible. nominal impedance clock output
Select Operation
select pins 2-level, meaning they have three separate states make selections shown table page
1709 Integrated Circuit Systems, Inc.
Race Street, Jose, 95126
Revision 031204 (408) 297-1201
www.icst.com
MK1709
Absolute Maximum Ratings
Stresses above ratings listed below cause permanent damage MK1709. These ratings, which standard values commercially rated parts, stress ratings only. Functional operation device these other conditions above those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect product reliability. Electrical parameters guaranteed only over recommended operating temperature range. Typical values 25°C.
Item
Supply Voltage, (referenced GND) Inputs Outputs (referenced GND) Ambient Operating Temperature Storage Temperature Soldering Temperature (maximum seconds)
Rating
-0.5 VDD+0.5 +85°C +150°C 260°C
Recommended Operation Conditions
Parameter
Ambient Operating Temperature Power Supply Voltage (measured respect GND)
Min.
+3.135
Typ.
Max.
+3.6
Units
Electrical Characteristics
Unless stated otherwise, Ambient Temperature +85°C
Parameter
Operating Voltage Supply Current (MK1709S) Supply Current (MK1709AG) Input High Voltage (ICLK) Input High Voltage (S1, Input High Voltage (other inputs) Input Voltage (ICLK) Input Voltage Output High Voltage (CMOS) Output High Voltage Output Voltage Input Capacitance
Symbol
Conditions
load, load, load, 150M
Min.
3.135
Typ.
Max.
3.465
Units
(VDD/2)+1 VDD-0.5
VDD/2
VDD/2 -4mA pins VDD-0.4
(VDD/2)-1
1709 Integrated Circuit Systems, Inc.
Race Street, Jose, 95126
Revision 031204 (408) 297-1201
www.icst.com
MK1709
Electrical Characteristics (MK1709S)
Unless stated otherwise, Ambient Temperature +85°
Parameter
Input/Output Clock Frequency Input Clock Duty Cycle Output Clock Duty Cycle Output Clock Rise Time Output Clock Fall Time Peak Frequency Reduction
Symbol
Conditions
Time above VDD/2 Time above
Min.
Typ.
Max. Units
2.0V 0.8V 19th harmonics
Electrical Characteristics (MK1709AG)
Unless stated otherwise, Ambient Temperature +85°
Parameter
Input/Output Clock Frequency Input Clock Duty Cycle Output Clock Duty Cycle
Symbol
Conditions
Time above VDD/2 Time above Time above Time above >150
Min.
Typ.
Max. Units
Output Clock Rise Time Output Clock Fall Time Peak Frequency Reduction
2.0V 0.8V 19th harmonics
Marking Diagrams
(Marking lead (Pb) free device shown below)
MK1709S YYWW ######
MK1709AG YYWWLF ######
1709 Integrated Circuit Systems, Inc.
Race Street, Jose, 95126
Revision 031204 (408) 297-1201
www.icst.com
MK1709
Package Outline Package Dimensions (8-pin SOIC, Mil. Body)
Package dimensions kept current with JEDEC Publication
Millimeters Symbol
Inches
INDEX AREA
1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.27 BASIC 5.80 6.20 0.25 0.50 0.40 1.27
.0532 .0688 .0040 .0098 .013 .020 .0075 .0098 .1890 .1968 .1497 .1574 0.050 BASIC .2284 .2440 .010 .020 .016 .050
SEATING PLANE
(.004)
1709 Integrated Circuit Systems, Inc.
Race Street, Jose, 95126
Revision 031204 (408) 297-1201
www.icst.com
MK1709
Package Outline Package Dimensions (8-pin TSSOP, Mil. Body)
Package dimensions kept current with JEDEC Publication
Millimeters Symbol Inches
-1.20 0.05 0.15 0.80 1.05 0.19 0.30 0.09 0.20 3.90 3.10 6.40 BASIC 4.30 4.50 0.65 Basic 0.45 0.75 0.10
-0.047 0.002 0.006 0.032 0.041 0.007 0.012 0.0035 0.008 0.114 0.122 0.252 BASIC 0.169 0.177 0.0256 Basic 0.018 0.030 0.004
1709 Integrated Circuit Systems, Inc.
Race Street, Jose, 95126
Revision 031204 (408) 297-1201
www.icst.com
MK1709
Ordering Information
Part Order Number
MK1709S MK1709STR MK1709AG MK1709AGTR MK1709AGLF MK1709AGLFTR
Marking
Shipping packaging
Tubes Tape Reel Tubes Tape Reel Tubes Tape Reel
Package
8-pin SOIC 8-pin SOIC 8-pin TSSOP 8-pin TSSOP 8-pin TSSOP 8-pin TSSOP
Temperature
+85° +85° +85° +85° +85° +85°
(see page
While information presented herein been checked both accuracy reliability, Integrated Circuit Systems (ICS) assumes responsibility either infringement patents other rights third parties, which would result from use. other circuits, patents, licenses implied. This product intended normal commercial applications. other applications such those requiring extended temperature range, high reliability, other extraordinary environmental requirements recommended without additional processing ICS. reserves right change circuitry specifications without notice. does authorize warrant product life support devices critical medical instruments.
1709 Integrated Circuit Systems, Inc.
Race Street, Jose, 95126
Revision 031204 (408) 297-1201
www.icst.com

MK1709 generates output clock from clock input. part designed dither i

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