cn-0209

Hi,

      I need to design a universal analog input module .I have referred to CN-0209.But I could not understand the purpose of ADG442 used in the circuit.Can I get help?

Regards,

Divya

Parents
  • Hi,

         Thanks for the quick response.I need help regarding the following:

    1. The voltage from the thermocouple will be small(in mV or uV range).Then how is it possible to directly connect the thermocouple voltage to the ADC without any signal conditioning?
    2. Can you make it more clear about how the ±10V signal is fed to the ADC?
    3. In the circuit, is AD8676 and AD8275 meant for RTD alone?
    4. Can you help me regarding the selection of microcontroller for the Programmable Analog Front End?

    Regards,

    Divya

Reply
  • Hi,

         Thanks for the quick response.I need help regarding the following:

    1. The voltage from the thermocouple will be small(in mV or uV range).Then how is it possible to directly connect the thermocouple voltage to the ADC without any signal conditioning?
    2. Can you make it more clear about how the ±10V signal is fed to the ADC?
    3. In the circuit, is AD8676 and AD8275 meant for RTD alone?
    4. Can you help me regarding the selection of microcontroller for the Programmable Analog Front End?

    Regards,

    Divya

Children
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