AD9851 DDS Function Signal Generator 0 - 50MHz DDS signal source

AD9851 DDS Function Signal Generator 0 - 50MHz DDS signal source.

AD9851 using the advanced DDS direct frequency synthesis technology , It can produce pure spectrum, frequency and phase are programmable control and stability good sine wave . Relative to internal added six AD9850 frequency multiplier, and the reference clock has only 30 MHZ to 180 MHZ system clock, design  of 0 ~ 70 MHZ, effectively reduce the external phase noise of frequency source.

Functional  Description:

1. Using AD9851 DDS chip, the external clock is active 30MHZ crystal.
2. Using seventh-order elliptic filter, cutoff frequency 70MHZ, step 0.04HZ; phase 16, step 11.25.
3. Sinusoidal output signal, square wave signal, amplitude stability.
4. 50% duty cycle square Bomo recognized 

Feature :

•   0-50MHz output
•   Sine wave, Square wave
•   89S52 study board.
•   LCD1602
•   Output signal amplitude 1Vp-p.
•   Warning : The power source SHOULD be 7 – 12VDC, barrel inner–positive! More than 12VDC will cause over-voltage damage
  to this board!
• Dimentions (cm) 24.0 x 16.0 x 13.0
• Weight (KG) 0.45

Operating manual

Here is some details of signal purity at 50 and 40Mhz

Scope view at 50Mhz

Frequency at 40Mhz

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