We have evaluated the AD719x chip....  Now What's Next......

Wow,,, we are quite impressed with the AD719x chip and it's features... The chip is currently meeting our design goal's, even with long wires ect for breadboarding... What I'm wondering NOW,, could the chip be used to monitor Lab Grade Power Supply outputs...  Just the Visual Voltage and Currents, no need for speed, or would we be looking for trouble noise wise.... The chip uses Delta Sigma and I'm not as familiar with that technology as the old tryed and true types....

Any thought's on this would be apprecated....

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  • 0
    •  Analog Employees 
    on Apr 10, 2013 2:41 AM

    Hi DonWarr,

    It is possible to use the part to monitor lab grade power supplies as long as the analog input voltage limits of the part are satisfied. The analog input voltage  is restricted to a range between AGND – 50 mV and AVDD + 50 mV in unbuffered(BUFF=0) mode, and AGND + 250 mV and AVDD – 250 mV in buffered(BUFF=1) mode.

     

    It is also required to use a stable and low noise voltage reference to attain maximum performance from the part. Recommended 2.5 V reference voltage sources for the AD7190 include the ADR421 and ADR431, which are low noise references.

     

    The AD7190 has best noise performance at low output data rates. If speed is not a concern for your application, I suggest using the minimum output data rate as this gives best performance.

    Thanks and Best Regards,

    Chris

Reply
  • 0
    •  Analog Employees 
    on Apr 10, 2013 2:41 AM

    Hi DonWarr,

    It is possible to use the part to monitor lab grade power supplies as long as the analog input voltage limits of the part are satisfied. The analog input voltage  is restricted to a range between AGND – 50 mV and AVDD + 50 mV in unbuffered(BUFF=0) mode, and AGND + 250 mV and AVDD – 250 mV in buffered(BUFF=1) mode.

     

    It is also required to use a stable and low noise voltage reference to attain maximum performance from the part. Recommended 2.5 V reference voltage sources for the AD7190 include the ADR421 and ADR431, which are low noise references.

     

    The AD7190 has best noise performance at low output data rates. If speed is not a concern for your application, I suggest using the minimum output data rate as this gives best performance.

    Thanks and Best Regards,

    Chris

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