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Frequently Asked Question

What logic families can interface with our parts?

The logic level I/O requirements of the various DDS parts are determined by the operating voltages of the devices. The logic inputs and outputs are CMOS levels, and can be interfaced with any logic families which operate at the same power supply voltage. I/O logic should be selected from an appropriate CMOS logic family. The speed of the family must be adequate for the speeds to be employed in the application.

The AD9851/52/53/54 and AD9859, which require a 1.8V power supply, can be operated with logic operating between 1.8 – 3.3V, by applying the desired voltage within this range to the I/O supply pin of the device.