SL2305 SPECTRALINEAR [SpectraLinear Inc], SL2305 Datasheet

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SL2305

Manufacturer Part Number
SL2305
Description
Low Jitter and Skew 10 to 140 MHz Zero Delay Buffer (ZDB)
Manufacturer
SPECTRALINEAR [SpectraLinear Inc]
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
SL2305SC-1H
Manufacturer:
SILICONLA
Quantity:
20 000
Company:
Part Number:
SL2305SC-1HT
Quantity:
2 570
Part Number:
SL2305SI-1HT
Manufacturer:
SILICONLA
Quantity:
20 000
Rev 1.4, May 25, 2007
2200 Laurelwood Road, Santa Clara, CA 95054 Tel: (408) 855-0555 Fax: (408) 855-0550 www.SpectraLinear.com
Key Features
Applications
Block Diagram
Low Jitter and Skew 10 to 140 MHz Zero Delay Buffer (ZDB)
10 to 140 MHz operating frequency range
Low output clock jitter:
Low output-to-output skew: 50 ps-typ
Low product-to-product skew: 125 ps-typ
3.3 V power supply range
Low power dissipation:
One input drives 5 outputs organized as 4+1
SpreadThru™ PLL that allows use of SSCG
Standard and High-Drive options
Available in 8-pin SOIC and TSSOP packages
Available in Commercial and Industrial grades
Printers and MFPs
Digital Copiers
PCs and Work Stations
DTV
Routers, Switchers and Servers
Digital Embeded Systems
45 ps-typ cycle-to-cycle jitter
26 mA-max at 66 MHz
42 mA-max at 140 MHz
Description
The SL2305 is a low skew, low jitter and low power Zero
Delay Buffer (ZDB) designed to produce up to five (5) clock
outputs from one (1) reference input clock for high speed
clock distribution applications. The product has an on-chip
PLL which locks to the input clock at CLKIN and receives its
feedback internally from the CLKOUT pin.
The SL2305 is available with two (2) drive strength versions.
The -1 is the standard-drive version and -1H is the high-
drive version.
The SL2305 high-drive version operates up to 140MHz and
the standard drive version -1 operates up to 100.
at CLKIN is DC (0 to VDD). In this power-down state all five
(5) outputs are tri-stated and the PLL is turned off leading to
less than 12 A-max of power supply current draw.
Benefits
The SL2305 enter into Power-Down (PD) mode if the input
Up to five (5) distribution of input clock
Standard and High-Dirive levels to control impedance
level, frequency range and EMI
Low jitter and skew
Low power dissipation
Low cost
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SL2305

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SL2305 Summary of contents

Page 1

... Laurelwood Road, Santa Clara, CA 95054 Tel: (408) 855-0555 Fax: (408) 855-0550 www.SpectraLinear.com Description The SL2305 is a low skew, low jitter and low power Zero Delay Buffer (ZDB) designed to produce up to five (5) clock outputs from one (1) reference input clock for high speed clock distribution applications ...

Page 2

... Buffered Clock Output Weak pull-down (250k ). Buffered Clock Output. Weak pull-down (250k ). Power Ground. Buffered Clock Output. Weak pull-down (250k ). 3.3V Power Supply. Buffered Clock Output. Weak pull-down (250k ). Buffered Clock Output, Used for Internal Feedback to PLL Input. Weak pull- down (250k ). SL2305 Page ...

Page 3

... General Description The SL2305 is a low skew, low jitter Zero Delay Buffer with very low operating current. The product includes an on-chip high performance PLL that locks into the input reference clock and produces nine (9) output clock drivers tracking the input reference clock for systems requiring clock distribution ...

Page 4

... MHz, -1H high drive 10 to 100 MHz, -1H high drive 10 to 100MHz, -1 standard drive 10 to 66MHz, -1 standard drive CLKIN pin Power-up time for all VDDs to reach minimum VDD voltage (VDD=3.0V). 3.3V, (typical) 3.3V (typical), -1H high drive 3.3V (typical), -1 standard drive SL2305 Min Max Unit – 0.5 4.6 V – 0.5 VDD+0.5 V ...

Page 5

... IOH = –8 mA (standard drive) IOH = –12 mA (high drive) C-Grade, Power-down if CLKIN=0 to VDD or input is floating I-Grade, Power-down if CLKIN=0 to VDD or input is floating All Outputs CL=0, 33-MHz CLKIN All Outputs CL=0, 66-MHz CLKIN All Outputs CL=0, 100-MHz CLKIN All Outputs CL=0, 140-MHz CLKIN Pins-1/2/3/5/7/8, 250k -typ SL2305 Min Max Unit 3.0 3.6 V – 0 ...

Page 6

... All outputs CL=0 or equally loaded -1H drives Measured at VDD/2 Time from 90% of VDD to valid clocks on all the output clocks [2] Fin=Fout=66 MHz, <CL=15pF, -1H drive Fin=Fout=66 MHz, <CL=15pF, -1 drive Fin=Fout=66 MHz, <CL=30pF, -1H drive Fin=Fout=66 MHz, <CL=30pF, -1 drive SL2305 Min Max Unit 10 140 MHz 10 100 MHz ...

Page 7

... CLKOUT pin could be increased or decreased to increase or decrease the delay between clocks and CLKIN. For minimum pin-to-pin skew, the external load at the clock outputs must be the same. Rev 1.4, May 25, 2007 . Use 20 resistor as close to the clock outputs as possible. SL2305 resistor in series with the Page ...

Page 8

... Switching Waveforms Rev 1.4, May 25, 2007 Figure 1. Output to Output Skew Figure 2. Input- to-Output Skew Figure 3. Part-to-Part Skew SL2305 Page ...

Page 9

... SOIC Package (150 mil) Thermal Characteristics Parameter Symbol Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case Rev 1.4, May 25, 2007 Condition JA Still air JA 1m/s air flow JA 3m/s air flow JC Independent of air flow SL2305 Min Typ Max Unit - 150 - °C/W - 140 - °C/W - 120 - °C/W - ...

Page 10

... Package Outline and Package Dimensions 8-Pin TSSOP Package (173 mil) Thermal Characteristics Parameter Symbol Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case Rev 1.4, May 25, 2007 Condition Still air 1m/s air flow 3m/s air flow Independent of air flow SL2305 Min Typ Max Unit - 110 - °C/W - 100 - °C ° ...

Page 11

... SL2305ZI-1H Notes: 3. The SL2305 products are RoHS compliant. While SLI has reviewed all information herein for accuracy and reliability, Spectra Linear Inc. assumes no responsibility for the use of any circuitry or for the infringement of any patents or other rights of third parties which would result from each use. This product is intended for ...

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