What will be output spectrum of ADF7030-1 if it is configured for test mode with continuous carrier transmission? I am expecting a tone on spectrum analyzer at programmed RF frequency for example 879 MHz.
Yes that is what you will see. Figure 55 of the datasheet shows the phase noise achievable.
Spectrum and Configuration file (generated from Design Center )is attached. I am getting spectrum not a single tone but a band. After loading Cfg file i am issuing test mode ON and PHY_TX_ON.
that looks like a modulated test mode rather than a carrier test mode.
could you check you are writing 0x00010000 to register 0x20000548
I am writing 0x00010000 to the register 0x20000548, not doing any calibration. Even if i am writing other values to 0x20000548 like 0x00030000 i am getting same result.
Expected Spectrum has been achieved, there was problem in 1,2nF CRF pin capacitor.