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PLL701-21 Datasheet(PDF) 1 Page - PhaseLink Corporation |
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PLL701-21 Datasheet(HTML) 1 Page - PhaseLink Corporation |
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Preliminary PLL701-21 Low EMI Spread Spectrum Multiplier Clock 47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 05/12/05 Page 1 FEATURES • Spread Spectrum Clock Generator with selectable SST mode. • Output frequency ranges: 24MHz to 200MHz. • Selectable Center Spread Modulation. • TTL/CMOS compatible outputs. • 3.3V Operating Voltage. • Low short-term jitter. • Available in 8-Pin 150mil SOIC. DESCRIPTION The PLL701-21 is a Spread Spectrum Clock Generator designed for the purpose of reducing EMI in high-speed digital systems, with selectable Center Spread modulation magnitude (see table below). The device operates over a very wide range of input frequencies and provides a 1x modulated clock output. PIN CONFIGURATION Note: v: 30k Ω Internal Pull down. ^: 30kΩ Internal Pull up. SST BY-PASS SELECTOR S3 Spread Spectrum Mode 0 OFF 1 ON (See below) Default Note: S3 has an internal Pull Up. Default=”1” MODULATION MAGNITUDE SELECTION Spread Spectrum Modulation S2 S1 S0 FIN Range (MHz) FOUT Frequency Magnitude 0 0 0 24 - 200 X1 ±0.75% 0 0 1 24 - 200 X1 ±1.00% 0 1 0 24 - 200 X1 ±1.25% 0 1 1 24 - 200 X1 ±0.125% 1 0 0 24 - 200 X1 ±0.25% 1 0 1 24 - 200 X1 ±0.50% 1 1 0 24 - 200 X1 ±0.375% 1 1 1 24 - 200 X1 Fin / 1024 ±0.625% 1 2 3 45 6 7 8 FIN S2^ S1^ S0v VDD FOUT GND S3^ FIN = 24 ~ 200 Mhz |
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