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PSIM Texas Instruments's F28335 floating-point DSP. AC mode A/D?

luuk carl
Prodigy 10 points

How can i  make bipolar ADC in Texas Instruments's F28335 floating-point DSP ?

Why in PSIM  i can  configure ADC  in AC MODE and DC MODE?

can i sense - 1.5 to 1.5 volts whitout OP-AMP due to AC MODE in the Configuration of ADC.

 

http://www.powersimtech.com/index.php?name=F28335

 

help!!!!

  • 0
    TI__Guru** 119680 points

    I've sent to PSIM to ask them to respond.

  • 0
    Prodigy 90 points

    The ADC of the DSP can only take an input from 0 to +3V. The ADC in PSIM is not 100% equivalent to that of the ADC on the DSP. It includes the functions of an offset circuit (if necessary), the DSP ADC, and a scaling block. You still need op. amp. to offset an ac signal to dc. PSIM's ADC simply models what you have in your circuit, and it makes the representation of the offset/ADC/scaling blocks easier.

    Powersim Tech Support