A kind of anti-radiation dds circuit
An anti-radiation and circuit technology, applied in the direction of electrical components, automatic power control, etc., can solve problems such as the wrong use of the subsequent DAC, the phase shift of the output digital signal, etc., and achieve the effect of simplifying the circuit configuration and difficulty of use
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[0027] The invention provides an anti-radiation DDS circuit, the structure of which is as follows: figure 1 As shown, including a DDS core, input digital core clock Core_clk into the DDS core, the DDS core generates interleaved digital sinusoidal signals data1 and data2 to the digital data transmission module; the digital data transmission module delivers the digital sinusoidal signals data1 and data2 data2 is sent to the analog receiving stage and the DAC module; the analog receiving stage is also input with an analog receiving clock Sysclk / 2, and the DAC module is also input with a system clock Sysclk; the DAC module generates an analog output signal Analog_out. Preferably, the anti-radiation DDS circuit further includes a dynamic correction circuit, the digital data transmission module generates a data clock dco to the dynamic correction circuit, and the output end of the dynamic correction circuit generates a selection signal Delay_select to the clock delay module, In addi...
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