Description

AD9850 DDS Signal Generator Module Sine Square wave high Frequency Signal

5V power supply

The communication port can use 3.3

Main features:

* The module can output sine wave and square wave, 2 sine wave and 2 square wave output.

AD9850: 0-40MHz

AD9851: 0-70MHz

After the frequency is 20-30MHz, the harmonics will become larger and larger, and the waveform will become more and more unclean.

Square wave: 0-1MHz

* Adopt 70MHz low-pass filter to make the SN ratio of the waveform better

* The pin (PIN12) that generates the DA reference is led out, which is convenient for the application of amplitude adjustment of the output waveform.

* The voltage of the reference input terminal of the comparator is generated by a variable resistor, which can be adjusted to obtain different duty cycle square waves

* AD9850 module adopts 125MHz active crystal oscillator, AD9851 module adopts 30MHz active crystal oscillator

The main differences between AD9850 and AD9851:

The clock frequency of AD9850 is up to 125MHz, and the clock frequency of AD9851 is up to 180MHz. The maximum output frequency of the AD9851 is higher than that of the AD9850.

AD9850 does not have 6 multiplier, AD9851 has