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how to program lmx2326
Today while working with my 2326 based PLL I noticed two spurious peaks 10MHz away from the VCO oscillation frequency (corresponding to vt=0volts) on either side of the main carrier. I feel that the reference signal (10MHz) is modulating the VCO signal and producing these...
spurious tcxo pll charge pump
-I am checking the carrier on a spectrum analyzer and it always remains at the frequency corresponding to vt=0v (~1649 MHz). never noticed if there was momentary action of pulling up or down to programmed value.
-will try checking the charge pump pulses.thanks
-i...
program lmx2326
1. I'am using +ve polarity to program the chip as the VCO needs +ve tuning voltage(0V to +5V) for tuning. I hope this is correct? (As a trial i tried changing this to -ve also but as would be expected, it did not help)
2. I'll try to do this today. thanks for this suggestion...
lmx2326
Hi I need help. I am designing a PLL at 1680 MHz using LMX2326 with a cutom VCO (1650-1700 MHz with atuning range of 0 to +5volts). I use a third order passive Loop filter designed on natinal webbench(C1:47pF, R2:68KΩ,C2:330pF,R3:82KΩ,C3:39pF). The reference oscilator is generating a...
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