SL15316
Programmable Spread Spectrum Clock Generator (SSCG)
Key Features
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Low power dissipation
- 9.0mA-typ at 66MHz and VDD=3.3V
- 8.0mA-typ at 66MHz and VDD=2.5V
Wide 3.3V to 2.5V power supply range
Programmable 5 outputs from 3 to 200MHz
VDDO power suplly for 3 outputs from 3.3 to
2.5V or 1.8V
Low Jitter
Programmable Center or Down Spread Modulation
from 0.25 to 5.0%
8 to 48 MHz external crystal range
3 to 166 MHz external clock range
Integrated internal voltage regulator
Programmable PD#/OE/SSON#/FS functions
Programmable CL at XIN and XOUT pins
Programmable output rise and fall times
Programmable modulation frequency from 25 to
120 kHz
Printers, MFPs
Digital Copiers
NBPCs and LCD Monitors
Routers, Servers and Switches
HDTV and DVD-R/W
Description
The SL15316 a programmable Ultra low Power Spread
Spectrum Clock Generator (SSCG) used for reducing
Electromagnetic Interference (EMI).
The product is designed using SpectraLinear proprietary
programmable phase-locked loop (PLL) and Spread
Spectrum Clock (SSC) technology to synthesize and
modulate the input clock. The modulated clock can
significantly reduce the measured EMI levels, and leading
to the compliance with regulatory agency requirements.
Up to 5 output clock frequencies, Spread %, output rise
and fall times, crystal load, modulation frequency and
PD#/OE/SSON#/FS functions can be programmed to meet
the needs of wide range of applications.
The SL15316 operates from 2.5V to 3.3V power supply
voltage range. Separate VDDO power supply is provided
for three (3) clock outputs which can be any value from
3.3V to 2.5V or 1.8V where VDDO≤VDD.
The product is offered in 16-pin TSSOP package with
commercial and industrial grades.
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Applications
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Benefits
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Peak EMI reduction of 6 to 16 dB
Fast time-to-market
Cost Reduction
Reduction of PCB layers
Eleminates the need for higher order crystals (Xtals)
and crystal oscillators (XOs)
Block Diagram
Rev 1.0, August 7, 2008
Page 1 of 12
2200 Laurelwood Road, Santa Clara, CA 95054 Tel: (408) 855-0555 Fax: (408) 855-0550 www.SpectraLinear.com
SPECTRALINEAR [ SPECTRALINEAR INC ]
