SY87739LHG Micrel Inc, SY87739LHG Datasheet
SY87739LHG
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SY87739LHG Summary of contents
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Micrel, Inc. FEATURES Protocol transparent fractional-N synthesizer from 10MHz to 729MHz from a single 27MHz reference oscillator Generates exactly the correct frequency for common transport protocols with or without FEC Directly enables SY87721L CDR to lock onto any data rate ...
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Micrel, Inc. PACKAGE/ORDERING INFORMATION VCCA 1 24 VCCA REFCLK+ CLKOUT REFCLK- CLKOUT PROGCS VCCO PROGDI 7 18 ...
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Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) ................................... –0.5V to +4.0V CC Input Voltage(V ) ....................................... –0. ECL Output Current (I ) OUT Continuous .......................................................... 50mA Surge .................................................................100mA Lead Temperature (soldering, 20 sec.) ...................... 260°C ...
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Micrel, Inc. AC ELECTRICAL CHARACTERISTICS 3.3V ±5%; GND = GNDA = 0V CCO CCA Symbol Parameter t REFCLK Input Rise/Fall Times IRF t REFCLK Pulse Width High REFPWH t REFCLK Pulse Width ...
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Micrel, Inc. FUNCTIONAL DESCRIPTION General The SY87739L AnyClock™ Fractional-N Synthesizer is used in serial data streaming applications, where the incoming data rate on a channel may vary, or where the incoming data rate on a channel is unknown ahead of ...
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Micrel, Inc Figure 2. 11/3 Example Figure 2 shows an example generating an output 2 frequency 3 / times the input frequency. Since the output 3 frequency is between 3 and ...
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Micrel, Inc. Fractional-N Control This circuit controls the P/P–1 divider, selecting the appropriate divide ratio, either P or P–1, in the correct pattern. As explained in the example of Figure 2 above, controlling the P/P–1 divider amounts to generating a ...
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Micrel, Inc. the same coarse adjustment voltage, and so both center nominally at the same frequency. An 8-bit counter implements the voltage steps. The acquisition sequencer steps through this counter, which changes its voltage by about 12mV per step. The ...
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Micrel, Inc. NdivSel2 NdivSel1 NdivSel0 Table 4. NdivSel Divisor Control P Divider The output of the wrapper synthesizer is post divided down before appearing ...
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Micrel, Inc. Standard Protocol Applications From a single 27.000MHz reference input, the SY87739L can generate exactly correct frequencies for at least the 18 protocols listed in Table 7. This table also shows how to Protocol SY87739L Fout (MHz) ETR OC-1 ...
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Micrel, Inc. SYSTEM BLOCK DIAGRAM FIBER PIN DIODE TIA REF_OSC SY889x2 FIBER LASER LASER DIODE DIODE DRIVER M9999-062807 hbwhelp@micrel.com or (408) 955-1690 SY889x3 SY87721L AnyRate POST AMP CDR SY87739L CMU One REF_CLK AnyClock® Fractional-N Synthesizer 8 bits P 11 SY87724L ...
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Micrel, Inc. FUNCTIONAL BLOCK DIAGRAM Center Frequency Trim REFCLK Phase- Frequency Detector Fractional-N Control M Divider PROGCS MicroWire™ PROGDI Interface PROGSK Aquisition Sequencer RELATED PRODUCT AND SUPPORT DOCUMENTATION Part Number Function SY87739L-EVAL Fractional-N Synthesizer Evaluation Board M9999-062807 hbwhelp@micrel.com or (408) ...
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Micrel, Inc. 32-PIN EPAD-TQFP 7mm X 7mm (DIE UP) (H32-2) Heat Dissipation PCB Thermal Consideration for 32-Pin EPAD-TQFP Package MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in ...