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CDC421A156 Datasheet(PDF) 3 Page - Texas Instruments |
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CDC421A156 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 15 page ELECTRICAL CHARACTERISTICS FUNCTIONAL BLOCK DIAGRAM Feedback Divider Output Divider PFD/ ChargePump Prescaler LoopFilter XIN1 XIN2 VCO Crystal Oscillator CDC421AXXX www.ti.com ....................................................................................................................................................................................................... SCAS875 – MAY 2009 Over recommended operating conditions (unless otherwise noted). CDC421Axxx PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VCC Supply voltage 3.00 3.30 3.60 V IVCC Total current 91 110 mA LVPECL OUTPUT fCLK Output frequency 100 312.5 MHz VOH LVPECL high-level output voltage VCC – 1.20 VCC – 0.81 V VOL LVPECL low-level output voltage VCC – 2.17 VCC – 1.36 V |VOD| LVPECL differential output voltage 407 1076 mV tR Output rise time 20% to 80% of VOUT(PP) 230 ps tF Output fall time 20% to 80% of VOUT(PP) 230 ps Duty cycle of the output waveform 45 55 % tj RMS jitter 10 kHz to 20 MHz 1 ps, RMS LVCMOS INPUT VIL, CMOS Low-level CMOS input voltage VCC = 3.3 V 0.3 × VCC V VIH, CMOS High-level CMOS input voltage VCC = 3.3 V 0.7 × VCC V IL, CMOS Low-level CMOS input current VCC = VCC, max, VIL = 0.0 V –200 µA IH, CMOS High-level CMOS input current VCC = VCC, min, VIH = 3.7 V 200 µA Figure 1. CDC421Axxx: High-Level Block Diagram Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 3 |
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