MK1574 Integrated Circuit System, MK1574 Datasheet

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MK1574

Manufacturer Part Number
MK1574
Description
Frame Rate Communications PLL
Manufacturer
Integrated Circuit System
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MK1574-01SLF
Manufacturer:
ICS
Quantity:
20 000
Part Number:
MK1574-01SLFTR
Manufacturer:
TEMIC
Quantity:
171
MDS1574-01D
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800 www.icst.com
The MK1574-01 is a Phase-Locked Loop (PLL)
based clock synthesizer, which accepts an 8 kHz
clock input as a reference, and generates many
popular communications frequencies. All outputs
are frequency locked together and to the input.
This allows for the generation of locked clocks to
the 8 kHz backplane clock, simplifying clock
generation and distribution in communications
systems.
MicroClock can customize this device for any
other different frequencies.
Description
Block Diagram
8kHz
Input Clock
FS0-3
4
I C R O
VDD
Buffer
Input
2
C
GND
LOC K
2
CAP1
1
Synthesis
Circuitry
Control
Clock
PLL
and
Frame Rate Communications PLL
Features
• Packaged in 16 pin narrow (150 mil) SOIC
• Exact multiplications stored in the device eliminate
• Accepts 8 kHz input clock
• Output clock rates include T1, E1, T2, E2
• 3.0V to 5.5V operation
• Available in commercial (0 to +70 C) or industrial
• For jitter attenuation, use the MK2049
the need for external dividers
(-40 to +85 C) temperature ranges
CAP2
Output
Output
Output
Output
Buffer
Buffer
Buffer
Buffer
CLK1
CLK2
CLK3
8kHz
(recovered)
MK1574
Revision 011601

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MK1574 Summary of contents

Page 1

... Description The MK1574- Phase-Locked Loop (PLL) based clock synthesizer, which accepts an 8 kHz clock input as a reference, and generates many popular communications frequencies. All outputs are frequency locked together and to the input. This allows for the generation of locked clocks to ...

Page 2

... Type Input output power supply connection MDS1574-01D Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800 www.icst.com C LOC K Frame Rate Communications PLL Output Clocks Decoding Table MK1574-01 (MHz) Decode Address ICLK FS3 FS3:0 (Hex) pin 1 ...

Page 3

... External Components/Crystal Selection The MK1574 requires a minimum number of external components for proper operation network (see Capacitor Selection on following page) should be connected between CAP1 and CAP2 as close to the chip as possible. A high quality ceramic capacitor is recommended. A decoupling capacitor of 0.1µF must be connected between VDD and GND pins (pins 2 and 3, 5 and 7) close to the chip, and 33 terminating resistors can be used on clock outputs with traces longer than 1 inch ...

Page 4

... Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800 www.icst.com C LOC K Frame Rate Communications PLL K1 Equation 1 C • K2 Equation 2 C 0.0516 0.0516 = 16.6 nF (16 nF nearest standard value) 400 0.707 • 6.2 = 34.7 k (36 k nearest standard value) 16E-9 4 MK1574 (zeta) is the damping factor ; Revision 011601 ...

Page 5

... Clock Multipliers/Accuracies In the table on page 2 are the actual multipliers stored in the MK1574 ROM, which yield the exact values shown for the output clocks. MDS1574-01D Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800 www.icst.com ...

Page 6

... Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800 www.icst.com C LOC K Frame Rate Communications PLL 45° c Marking MK1574-01S MK1574-01S MK1574-01SI MK1574-01SI Comments Original Added I grade, revised filter equations, updated address. Added Absolute Jitter value. Added additional capacitor requirements pin SOIC narrow Inches Inches ...

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