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LMX2305 Datasheet(PDF) 10 Page - National Semiconductor (TI) |
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LMX2305 Datasheet(HTML) 10 Page - National Semiconductor (TI) |
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10 / 14 page 
Typical Application Example Operational Notes TLW12459 – 22 VCO is assumed AC coupled RIN increases impedance so that VCO output power is provided to the load rather than the PLL Typical values are 10X to 200X depending on the VCO power level fIN RF impedance ranges from 40X to 100X 50X termination is often used on test boards to allow use of external reference oscillator For most typical products a CMOS clock is used and no terminating resistor is required OSCIN may be AC or DC coupled AC coupling is recommended because the input circuit provides its own bias (See Figure below) TLW12459 – 23 Application Hints Proper use of grounds and bypass capacitors is essential to achieve a high level of performance Crosstalk between pins can be reduced by careful board layout This is an electrostatic sensitive device It should be handled only at static free work stations http www nationalcom 10 |
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