Direct Digital Synthesizer Output Frequency

[roxy1001]

I want to design a frequency synthesizer using DDS Output frequency should be variable between 45KHz - 55KHz.
with minimum frequency step of ~10Hz or less. Is it possible to design such system using DDS ?
Or what else can I use? Please reply ASAP. :-|
Thank you in advance !

 

[FvM]

The answer is yes.

 

[roxy1001]

The answer is yes.

Thanks for the reply.
Can you suggest me how? Any reference would be helpful.

 

[FvM]

Explains the basic structure and realations https://en.wikipedia.org/wiki/Numerically_controlled_oscillator

 

[spudboy488]

Analog Devices makes a series of DDS chips that would work. You would need a uP to control them but the frequency and resolution would not be a problem.

http://www.analog.com/en/rfif-components/direct-digital-synthesis-dds/products/index.html

Go here to see various results using different chips and clock.

**broken link removed**

I use the AD9835 with a 50 MHz clock.