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I need a vtune signal which is sweeping between 2 and 3.6V at  500us by using AD9956

Question asked by gkhndrk on Aug 4, 2017
Latest reply on Aug 16, 2017 by mcee

Hi everyone,

I'm trying to run VCO in the range of 2100-2180 MHz with AD9956 .I am using TM4C123GXL as a microcontroller and 25 MHz crystal.I want to work with linear sweep no dwell mode.Everything is OK.But i can not change the Period of the Vtune signal and  amplitude of the vtune signal in the same time.Vtune must be between 2v and 3.6v and period must be 500us. When i set the period of the vtune signal to 500us,i can not set the voltage of the vtune signal to 2-3.6 V. When i set voltage of the vtune signal 2-3.6 V,i can not set the period of the vtune signal to 500 us.As i mentioned in the title,i need a signal sweeping between 2 and 3.6 V at 500us.How can i get this signal?Thanks.


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