analog to digital converter

Hi,

We need a single channel a2d in the range of +-10V with resolution of 20microVolts

i looked at the AD7732 and its evaluation kit. will this product do the job?

if so, i going to connect it to a linux PC where can I find the command set for the RS232 serial port?

Regards,

Oded Godsi

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  • Hi Oded Godsi,

         The AD7732 will be a good choice base from the specification that you describe. I have also filters other parts that may help with your application. By the way, what is the specific application you intend to use the part? If you want to search more ADCs that is fit to your application, you may visit the ADI website and do a parametric search and filter the search base from your own specification. Please refer to the link. Selection Table for All A/D Converters

                                                                     

    Part # Resolution Throughput Rate Number of
      Channels
    Circuit
      Architecture
    INL in LSBs
      (max)
    Analog Input
      Type
    DNL (max) Vin Range (max)
    AD7734 24 15.4 kSPS 4 Sigma-Delta SE-Bip, SE-Uni 20 V p-p
    AD7732 24 15.4 kSPS 2 Sigma-Delta Diff-Bip, Diff-Uni 20 V p-p
    AD7713 24 205 SPS 3 Sigma-Delta 754.97 Diff-Bip, Diff-Uni,
      SE-Uni
    0.0596 20 V p-p
    AD7712 24 1.028 kSPS 2 Sigma-Delta 754.97 Diff-Bip, Diff-Uni,
      SE-Bip
    0.0596 21 V p-p

    Regards,

    Jonathan

Reply
  • Hi Oded Godsi,

         The AD7732 will be a good choice base from the specification that you describe. I have also filters other parts that may help with your application. By the way, what is the specific application you intend to use the part? If you want to search more ADCs that is fit to your application, you may visit the ADI website and do a parametric search and filter the search base from your own specification. Please refer to the link. Selection Table for All A/D Converters

                                                                     

    Part # Resolution Throughput Rate Number of
      Channels
    Circuit
      Architecture
    INL in LSBs
      (max)
    Analog Input
      Type
    DNL (max) Vin Range (max)
    AD7734 24 15.4 kSPS 4 Sigma-Delta SE-Bip, SE-Uni 20 V p-p
    AD7732 24 15.4 kSPS 2 Sigma-Delta Diff-Bip, Diff-Uni 20 V p-p
    AD7713 24 205 SPS 3 Sigma-Delta 754.97 Diff-Bip, Diff-Uni,
      SE-Uni
    0.0596 20 V p-p
    AD7712 24 1.028 kSPS 2 Sigma-Delta 754.97 Diff-Bip, Diff-Uni,
      SE-Bip
    0.0596 21 V p-p

    Regards,

    Jonathan

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