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AD 9956

Question asked by LGNS_ENGINEER40 on Aug 11, 2017
Latest reply on Aug 16, 2017 by mcee

Hi,

I want to sweep between 2100 and 2180 Mhz, 100 kHz intervals, 500 us period. I use AD 9956 synthesizer for this. And my crystal is 25 MHz. I use the TM4C123GXL DSP as a microcontroller. When I get a value of 500us, the required Vtune for Vco (CVCO55BE 2100-2200) should be between 2.00 and 3.50 volts, but I can not. When I get 500us value, I can not make a change in peak to peak value. I can not change the Period of the Vtune signal and amplitude of the Vtune signal at the same time.How can I get this signal?

Thanks.

PS: I can send my code, if you need for the answer.

 

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