DDS AD9850 output - U channel 100 V, I channel 1 A

Discussion in 'General Electronics Chat' started by zigler, Jan 2, 2013.

  1. zigler

    Thread Starter New Member

    Jan 2, 2013
    I chose AD9850 for my project (sine generator, with frequency 40 to 60 Hz).
    What type of output has this dds? (U or I)

    I have to make two different channels:
    1) Output1 has tunable (with computer) voltage within the limits of 0 - 100 V (current is not important).
    2) Output2 has tunable (with computer) current within the limits of 0 - 1 A (voltage is not important).
    (for simulation a secondary circuit of the voltage/current transformer)

    I have question, how I can become such parameters at output?
    I decided to use dds -> active_lowpass_filter -> digital_potentiometer -> amplifier(e.g. TDA2030) -> transformer (for voltage conversion and electrical isolation). may be needed to shift the voltage with op amp.

    Sine wave must be sufficiently clean with precisely controlled from a computer amplitude (deviation within 0.1% are allowed)

    What do you think about this?