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P520-28QC Datasheet(PDF) 1 Page - PhaseLink Corporation |
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P520-28QC Datasheet(HTML) 1 Page - PhaseLink Corporation |
1 / 7 page PLL520-28/-29 Low Phase Noise VCXO (for 120-200MHz Fund Xtal) 47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 09/20/04 Page 1 FEATURES • 120MHz to 200MHz Fundamental Mode Crystal. • Output range: 120 – 200MHz (no PLL). • Low Injection Power for crystal 50uW. • Sub 0.5pS RMS phase jitter ( 12kHz to 20MHz ). • PECL (PLL520-28) or LVDS output (PLL520-29). • Integrated variable capacitors. • Supports 2.5V or 3.3V-Power Supply. • Available in 16-Pin (TSSOP or 3x3mm QFN). DESCRIPTION The PLL520-28/-29 are a family of VCXO IC’s specifically designed to pull high frequency fundamental crystals. They achieve very low current into the crystal resulting in better overall stability. Their internal varicaps allow an on chip frequency pulling, controlled by the VCON input. Their very low jitter makes them ideal for the most demanding timing requirements. BLOCK DIAGRAM PIN CONFIGURATION (Top View) OUTPUT ENABLE LOGICAL LEVELS Part # OE State 0 (Default) Output enabled PLL520-28 1 Tri-state 0 Tri-state PLL520-29 1 (Default) Output enabled OE input: Logical states defined by PECL levels for PLL520-28 Logical states defined by CMOS levels for PLL520-29 1 2 3 4 5 6 7 8 VDD 9 10 11 12 13 14 15 16 XIN XOUT N/C N/C OE VCON GND N/C N/C GND CLKC VDD CLKT N/C N/C XIN XOUT OE Q PLL520-28/-29 VCON Q Oscillator Amplifier w/ integrated varicaps P520-2x GND VDD CLKT CLKC XOUT XIN N/C OE 4 16 15 14 13 12 11 10 9 8 7 6 5 12 3 |
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