Direct Digital Synthesis (DDS)

Q&A AD9850 Phase Bits Are Not Clearly Defined

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AD9850 Production
The AD9850 is a highly integrated device that uses advanced DDS technology coupled with an internal high speed, high performance, D/A converter and comparator...
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AD9850 on Analog.com

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AD9850 Phase Bits Are Not Clearly Defined

John_M

on Mar 6, 2025

Thread Summary

The user inquired about the value of each phase bit in a 5-bit system. The final answer provided the phase bit values: b0 = 11.25 degrees, b1 = 22.5 degrees, b2 = 45 degrees, b3 = 90 degrees, and b4 = 180 degrees. No specific Analog Devices products were mentioned.
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Category: Datasheet/Specs

Product Number: AD9850

What is the value of each phase bit, are the 5 bits 11.25 degrees?

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Added part number
[edited by: John_M at 1:19 PM (GMT -5) on 6 Mar 2025]

Datasheet/Specs clock and timing Clocks & Timers ad9850 Direct Digital Synthesis (DDS)

John_M

on Mar 6, 2025 8:18 AM
+1
The bit description and values are:

Phase - b0 = 11.25 degrees

Phase - b1 = 22.5

Phase - b2=45

Phase - b3 = 90

Phase - b4 = 180 degrees
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