LMX2582: channel divider setting

user6293841

Part Number: LMX2582

Can I use divider settings SEG1 div = 2, seg2 div = 2, total div=4 for output frequency over 1184MHz?
The guideline of the Channel divider setting(Table.4 of the datasheet) says SEG1 div = 3, seg2 div = 1, total div=3 for output frequency 1414MHz. This total div=3 setting seems to be no good for driving a quadrature generator with a divide-by-2 method. The total div=4 setting brings a good quadrature generation result. Are such settings out of guideline allowed?

over 4 years ago

0 Derek Payne over 4 years ago

TI__Mastermind 33340 points

Hi user6293841,

The suggestions given in Table 4 minimize the number of active segments, reducing the total power and divide value required to achieve the desired frequency. If you want to use SEG1=2, SEG2=2, and set the channel divider mux to SEG1&2, this should work (though it will consume more power than the SEG1=3 case).

Regards,

0 user6293841 over 4 years ago in reply to Derek Payne

Prodigy 110 points

Thank you for your advice !

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LMX2582: channel divider setting