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Frequently Asked Question

What is the proper termination for the DAC outputs for the DDS products?

The DAC outputs should be terminated with the proper load impedance in order to limit the output voltage swing so that it is within the voltage compliance limits of the output stage. Both DAC outputs (true and complementary) should be terminated with the same resistance for best SFDR performance, and to limit harmonic distortion at higher output frequencies. In most cases this should be 50 ohms.