DATASHEET
PLL AUDIO CLOCK SYNTHESIZER MK2703B
IDT™ / ICS™
PLL AUDIO CLOCK SYNTHESIZER 1
MK2703B REV D 042606
Description
The MK2703B is a low-cost, low-jitter, high performance
PLL clock synthesizer designed to replace oscillators and
PLL circuits in set-top box and multimedia systems. Using
ICS’ patented analog Phase Locked Loop (PLL)
techniques, the device uses a 27 MHz crystal or clock input
to produce a buffered reference clock and a selectable
audio clock.
ICS manufactures the largest variety of Set-Top Box and
multimedia clock synthesizers for all applications. Consult
ICS to eliminate VCXOs, crystals and oscillators from your
board.
Features
•Packaged in 8-pin SOIC
•Available in RoHS compliant package
•Uses an inexpensive, fundamental mode crystal or clock
•Patented zero ppm synthesis error in all clocks
•All frequencies are frequency locked
•Advanced, low power, sub-micron CMOS process
•Operating voltage of 3.3 V or 5 V
•Industrial temperature version available
Block Diagram
Audio Clock
PLL Clock
Synthesis
and Control
Circuitry
27 MHz
crystal or
clock input
VDD
Crystal
Oscillator
S1:0
X1
X2
27M
GND
2
Capacitors are required for crystal tuning
MK2703B
PLL AUDIO CLOCK SYNTHESIZER CLOCK SYNTHESIZER
IDT™ / ICS™
PLL AUDIO CLOCK SYNTHESIZER 2
MK2703B REV D 042606
Pin Assignment
8-pin (150 mil) SOIC
AUDIO CLOCK OUTPUT SELECT TABLE
Key: 0 = Connect pin directly to ground
1 = Connect pin directly to VDD
Pin Descriptions
External Components
Decoupling Capacitor
As with any high-performance mixed-signal IC, the
MK2703B must be isolated from system power supply noise
to perform optimally.
A decoupling capacitor of 0.01µF must be connected
between VDD and GND on pins 2 and 3. It must be
connected close to the MK2703B to minimize lead
inductance. No external power supply filtering is required for
the MK2703B.
Series Termination Resistor
A 33Ω terminating resistor can be used next to the clock
outputs for trace lengths over one inch.
Crystal Load Capacitors
The total on-chip capacitance is approximately 16 pF. A
parallel resonant, fundamental mode, AT cut 27 MHz crystal
should be used. The device crystal connections should
include pads for small capacitors from X1 to ground and
from X2 to ground. These capacitors are used to adjust the
X1
VDD
GND
S0
27M
S1
CLK
X21
2
3
4
8
7
6
5
S1 S0 CLK (MHz)
0 0 8.192
0 1 11.2896
1 0 12.288
1 1 24.576
Pin
Number
Pin
Name
Pin
Type
Pin Description
1 X1 XI Crystal Connection. Connect to a 27 MHz fundamental crystal or clock.
2 VDD Power Connect to +3.3 V or +5 V.
3 GND Power Connect to ground.
4 27M Output 27 MHz buffered reference clock output.
5 CLK Output Audio clock output per table above.
6 S1 Input Audio clock frequency select input #1. Determines CLK output per table
above. Internal pull-up resistor.
7 S0 Input Audio clock frequency select input #0. Determines CLK output per table
above. Internal pull-up resistor.
8 X2 XO Crystal connection to a 27 MHz crystal, or leave unconnected for clock
output.
MK2703B
PLL AUDIO CLOCK SYNTHESIZER CLOCK SYNTHESIZER
IDT™ / ICS™
PLL AUDIO CLOCK SYNTHESIZER 3
MK2703B REV D 042606
stray capacitance of the board to match the nominally
required crystal load capacitance. Because load
capacitance can only be increased in this trimming process,
it is important to keep stray capacitance to a minimum by
using very short PCB traces (and no vias) between the
crystal and device. Crystal capacitors, if needed, must be
connected from each of the pins X1 and X2 to ground.
The value (in pF) of these crystal caps should equal (CL -16
pF)*2. In this equation, CL= crystal load capacitance in pF.
Example: For a crystal with an 18 pF load capacitance, each
crystal capacitor would be 4 pF [(18-16) x 2] = 4.
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the MK2703B. 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.
Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical
parameters are guaranteed only over the recommended operating temperature range.
Recommended Operation Conditions
DC Electrical Characteristics
VDD=3.3 V ±5% , Ambient temperature -40 to +85°C, unless stated otherwise
Item Rating
Supply Voltage, VDD -0.5 V to 7 V
All Inputs and Outputs -0.5 V to VDD+0.5 V
Ambient Operating Temperature, MK2703BS (commercial) 0 to +70°C
Ambient Operating Temperature, MK2703BSI (industrial) -40 to +85°C
Storage Temperature -65 to +150°C
Soldering Temperature 260°C
Parameter Min. Typ. Max. Units
Ambient Operating Temperature -40 +85 °C
Power Supply Voltage (measured in respect to GND) +3.13 +5.50 V
Parameter Symbol Conditions Min. Typ. Max. Units
Operating Voltage VDD 3.13 5.50 V
Input High Voltage VIH X1 pin only
Note 1
(VDD/2)+1 VDD/2 V
Input Low Voltage VIL X1 pin only
Note 1
VDD/2 (VDD/2)-1 V
Input High Voltage VIH S0, S1 pins 2.0 V
Input Low Voltage VIL S0, S1 pins 0.8 V
Output High Voltage VOH IOH = -12 mA 2.4 V
MK2703B
PLL AUDIO CLOCK SYNTHESIZER CLOCK SYNTHESIZER
IDT™ / ICS™
PLL AUDIO CLOCK SYNTHESIZER 4
MK2703B REV D 042606
Note 1: CMOS level input. Nominal trigger point is VDD/2 for 3.3 V or 5 V operation
AC Electrical Characteristics
VDD = 3.3 V ±5%, Ambient Temperature -40 to +85° C, unless stated otherwise
Note 1: Measured with 15 pF load.
Thermal Characteristics
Output Low Voltage VOL IOL = 12 mA 0.4 V
Output High Voltage, CMOS level VOH IOH = -4 mA VDD-0.4 V
Operating Supply Current IDD No load
VDD = 3.3 V
10 mA
Short Circuit Current CLK output ±50 mA
Input Capacitance CIN S0, S1 pins 5 pF
Nominal Output Impedance 20 Ω
Frequency Synthesis Error All Clocks 0 ppm
Internal Pull-Up Resistor RPUP S1, S0 pins 750 kΩ
Parameter Symbol Conditions Min. Typ. Max. Units
Input Crystal or Clock Frequency FIN 27 MHz
Output Clock Rise Time tOR 0.8 to 2.0 V, Note 1 0.7 1.5 ns
Output Clock Fall Time tOF 2.0 to 8.0 V, Note 1 0.7 1.5 ns
Clock Stabilization Time After
Power Up
10 ms
Changing Frequency Setting 10 ms
Output Clock Duty Cycle at VDD/2, Note 1 40 60 %
Maximum Absolute Jitter, short
term
tja Deviation from
mean
±150 ps
Parameter Symbol Conditions Min. Typ. Max. Units
Thermal Resistance Junction to
Ambient
θJA Still air 150 °C/W
θJA 1 m/s air flow 140 °C/W
θJA 3 m/s air flow 120 °C/W
Thermal Resistance Junction to Case θJC 40 °C/W
Parameter Symbol Conditions Min. Typ. Max. Units
MK2703B
PLL AUDIO CLOCK SYNTHESIZER CLOCK SYNTHESIZER
IDT™ / ICS™
PLL AUDIO CLOCK SYNTHESIZER 5
MK2703B REV D 042606
Marking Diagram – MK2703BS
Marking Diagram – MK2703BSLF
Marking Diagram – MK2703BSI
Marking Diagram – MK2703BSILF
Notes:
1. ###### is the lot number.
2. YYWW is the last two digits of the year and the week number that the part was assembled.
3. “L” or “LF” denotes Pb (lead) free packaging.
4. “I” denotes industrial temperature range.
5. Bottom marking: (origin). Origin = country of origin if not USA.
MK2703B
######
YYWW
14
58
MK2703BL
######
YYWW
14
58
MK2703BI
######
YYWW
14
58
2703BIL
######
YYWW
14
58
MK2703B
PLL AUDIO CLOCK SYNTHESIZER CLOCK SYNTHESIZER
IDT™ / ICS™
PLL AUDIO CLOCK SYNTHESIZER 6
MK2703B REV D 042606
Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Narrow Body)
Package dimensions are kept current with JEDEC Publication No. 95
Ordering Information
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. 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 ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS
does not authorize or warrant any ICS product for use in life support devices or critical medical instruments.
Part / Order Number Marking Shipping Packaging Package Temperature
MK2703BS see page 5 Tubes 8-pin SOIC 0 to +70° C
MK2703BSTR Tape and Reel 8-pin SOIC 0 to +70° C
MK2703BSI Tubes 8-pin SOIC -40 to +85° C
MK2703BSITR Tape and Reel 8-pin SOIC -40 to +85° C
MK2703BSLF Tubes 8-pin SOIC 0 to +70° C
MK2703BSLFTR Tape and Reel 8-pin SOIC 0 to +70° C
MK2703BSILF Tubes 8-pin SOIC -40 to +85° C
MK2703BSILFTR Tape and Reel 8-pin SOIC -40 to +85° C
INDEX
AREA
1 2
8
D
E
SEATING
PLANE
A1
A
e
- C -
B
.10 (.004) C
C
L
H
h x 45
*For reference only. Controlling dimensions in mm.
Millimeters Inches*
Symbol MinMaxMinMax
A 1.35 1.75 .0532 .0688
A1 0.10 0.25 .0040 .0098
B 0.33 0.51 .013 .020
C 0.19 0.25 .0075 .0098
D 4.80 5.00 .1890 .1968
E 3.80 4.00 .1497 .1574
e 1.27 BASIC 0.050 BASIC
H 5.80 6.20 .2284 .2440
h 0.25 0.50 .010 .020
L 0.40 1.27 .016 .050
α0°8°0°8°
© 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
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.)
Asia Pacific and Japan
Integrated Device Technology
Singapore (1997) Pte. Ltd.
Reg. No. 199707558G
435 Orchard Road
#20-03 Wisma Atria
Singapore 238877
+65 6 887 5505
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Prime House
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United Kingdom KT22 7DE
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Fax: 408-284-2775
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MK2703B
PLL AUDIO CLOCK SYNTHESIZER CLOCK SYNTHESIZER
