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AUDIO CLOCK SYNTHESIZER Description
MK2704 cost, jitter, high-performance clock synthesizer designed replace oscillators circuits set-top multimedia systems. Using ICS' patented analog Phase Locked Loop (PLL) techniques, device uses crystal clock input produce buffered reference clock selectable audio clock. audio clock frequency locked clock, assuring that audio with zero error video will track perfectly. manufactures largest variety Set-Top multimedia clock synthesizers applications. Consult eliminate VCXOs, crystals oscillators from your board.
MK2704 Features
Packaged 8-pin SOIC Available Pb-free packaging Uses inexpensive, fundamental crystal clock Selectable audio output clock 16.9344 MHz, 18.432 MHz, 36.864 kHz,
Supports MPEG sampling rates 384x, 44.1 kHz,
Patented zero synthesis error clocks frequencies frequency locked output drive capability levels Advanced, power, sub-micron CMOS process Operating voltage
Block Diagram
S1:0
Clock Synthesis Control Circuitry
Crystal Oscillator
crystal clock input
Capacitors required crystal tuning
IDT/ ICSPLL AUDIO CLOCK SYNTHESIZER
MK2704
021304
MK2704 AUDIO CLOCK SYNTHESIZER
CLOCK SYNTHESIZER
Assignment
AUDIO CLOCK OUTPUT SELECT TABLE
(MHz) 36.864 Test 16.9344 18.432
Key: Connect directly ground 8-pin (150 mil) SOIC Connect directly
Descriptions
Number Name
Type
Power Power Output Output Input Input Connect +3.3 Connect ground.
Description
Crystal Connection. Connect fundamental crystal clock.
27.00 buffered reference clock output. Audio clock output table above. Audio clock frequency select input Determines output table above. Internal pull-up resistor. Audio clock frequency select input Determines output table above. Internal pull-up resistor. Crystal connection crystal, leave unconnected clock output.
External Components
Decoupling Capacitor
with high performance mixed-signal MK2704 must isolated from system power supply noise perform optimally. decoupling capacitor 0.01µF must connected between pins must connected close MK2704 minimize lead inductance. external power supply filtering required MK2704.
Series Termination Resistor
terminating resistor used next clock outputs trace lengths over inch.
Crystal Load Capacitors
total on-chip capacitance approximately parallel resonant, fundamental mode, crystal should used. device crystal connections should include pads small capacitors from ground from ground. These capacitors used adjust
IDT/ ICSPLL AUDIO CLOCK SYNTHESIZER
MK2704
021304
MK2704 AUDIO CLOCK SYNTHESIZER
CLOCK SYNTHESIZER
stray capacitance board match nominally required crystal load capacitance. Because load capacitance only increased this trimming process, important keep stray capacitance minimum using very short traces (and vias) between crystal device. Crystal capacitors, needed, must
connected from each pins ground. value these crystal caps should equal pF)*2. this equation, crystal load capacitance Example: crystal with load capacitance, each crystal capacitor would [(18-16)
Absolute Maximum Ratings
Stresses above ratings listed below cause permanent damage MK2704. 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.
Item
Supply Voltage, Inputs Outputs Ambient Operating Temperature Storage Temperature Soldering Temperature
Rating
-0.5 VDD+0.5 +70°C +150°C 260°C
Recommended Operation Conditions
Parameter
Ambient Operating Temperature Power Supply Voltage (measured respect GND)
Min.
+3.13
Typ.
Max.
+5.50
Units
Electrical Characteristics
VDD=3.3 Ambient temperature +70°C, unless stated otherwise
Parameter
Operating Voltage Input High Voltage Input Voltage Input High Voltage Input Voltage Output High Voltage Output Voltage
Symbol
Conditions
only Note only Note pins pins
Min.
3.13
Typ.
Max.
5.50
Units
(VDD/2)+1 VDD/2 VDD/2 (VDD/2)-1
IDT/ ICSPLL AUDIO CLOCK SYNTHESIZER
MK2704
021304
MK2704 AUDIO CLOCK SYNTHESIZER
CLOCK SYNTHESIZER
Parameter
Output High Voltage, CMOS level Operating Supply Current
Symbol
Conditions
load 3.3.V load
Min.
VDD-0.4
Typ.
Max.
Units
Short Circuit Current Input Capacitance Nominal Output Impedance Frequency Synthesis Error
output pins Clocks
Note CMOS level input. Nominal trigger point VDD/2 operation
Electrical Characteristics
±5%, Ambient Temperature +70°C, unless stated otherwise
Parameter
Input Crystal Clock Frequency Input Crystal Accuracy Output Clock Rise Time Output Clock Fall Time Output Clock Duty Cycle Maximum Absolute Jitter, short Note Measured with load.
Symbol
Conditions
Min.
Typ.
Max.
Units
Note Note VDD/2, Note
Deviation from mean
±225
Thermal Characteristics
Parameter
Thermal Resistance Junction Ambient
Symbol
Conditions
Still flow flow
Min.
Typ.
Max. Units
°C/W °C/W °C/W °C/W
Thermal Resistance Junction Case
IDT/ ICSPLL AUDIO CLOCK SYNTHESIZER
MK2704
021304
MK2704 AUDIO CLOCK SYNTHESIZER
CLOCK SYNTHESIZER
Package Outline Package Dimensions (8-pin SOIC, Mil. Narrow Body)
Package dimensions kept current with JEDEC Publication
Millimeters
Inches
Symbol
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)
Ordering Information
Part Order Number (Note
MK2704S MK2704STR MK2704SLF MK2704SLFTR
Marking
2704S 2704S 2704SL 2704SL
Shipping packaging
Tubes Tape Reel Tubes Tape Reel
Package
8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC
Temperature
+70° +70° +70° +70°
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.
IDT/ ICSPLL AUDIO CLOCK SYNTHESIZER
MK2704
021304
MK2704 AUDIO CLOCK SYNTHESIZER
CLOCK SYNTHESIZER
Innovate with accelerate your future networks. Contact:
www.IDT.com
Sales
800-345-7015 408-284-8200 Fax: 408-284-2775
Tech Support
<product line email> <product line phone>
Corporate Headquarters
Integrated Device Technology, Inc. 6024 Silver Creek Valley Road Jose, 95138 United States 7015 +408 8200 (outside U.S.)
Asia Pacific Japan
Integrated Device Technology Singapore (1997) Pte. Ltd. Reg. 199707558G Orchard Road #20-03 Wisma Atria Singapore 238877 5505
Europe
Europe, Limited Prime House Barnett Wood Lane Leatherhead, Surrey United Kingdom KT22 1372
2006 Integrated Device Technology, Inc. rights reserved. Product specifications subject change without notice. logo trademarks Integrated Device Technology, Inc. Accelerated Thinking service mark Integrated Device Technology, Inc. other brands, product names marks trademarks registered trademarks used identify products services their respective owners. Printed
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