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© Semiconductor Components Industries, LLC, 2011
October, 2011 − Rev. 7
1 Publication Order Number:
FS7140/D
FS7140, FS7145
Programmable Phase-
Locked Loop Clock
Generator
Description
The FS7140 or FS7145 is a monolithic CMOS clock generator/
regenerator IC designed to minimize cost and component count in a
variety of electronic systems. Via the I
2
C−bus interface, the
FS7140/45 can be adapted to many clock generation requirements.
The length of the reference and feedback dividers, their fine
granularity and the flexibility of the post divider make the FS7140/45
the most flexible stand−alone PLL clock generator available.
Features
• Extremely Flexible and Low−jitter Phase Locked Loop (PLL)
Frequency Synthesis
• No External Loop Filter Components Needed
• 150 MHz CMOS or 340 MHz PECL Outputs
• Completely Configurable via I
2
C−bus
• Up to Four FS714x can be Used on a Single I
2
C−bus
• 3.3 V Operation
• Independent On−chip Crystal Oscillator and External Reference
Input
• Very Low “Cumulative” Jitter
• Pb−Free Packages are Available
Applications
• Precision Frequency Synthesis
• Low−frequency Clock Multiplication
• Video Line−locked Clock Generation
• Laser Beam Printers (FS7145)
http://onsemi.com
SOIC−16
01 SUFFIX
CASE 751BA
(Top View)
1
CLKN
CLKP
VDD
SCL
SDA
ADDR0
VSS
PIN CONNECTIONS
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
ORDERING INFORMATION
SSOP−16
02 SUFFIX
CASE 565AE
*
REF
VSS
N/C
IPRG
XIN
XOUT
ADDR1
VDD
* FS7140 pin 13 = N/C
* FS7145 pin 13 = SYNC
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