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ADS8332: Sample/hold function

Part Number: ADS8332
Other Parts Discussed in Thread: ADS8588H

Hi team,

At the datasheet page 20, the datasheet describes "which inherently includes a sample/hold function." Does it mean the customer doesn't require external sample/hold circuit, since the device has sample/hold circuit?

Thank you for your support.

Best regards,

Takeshi Sasaki

  • Hi Takeshi-san,

    You are correct; there is an internal sample and hold capacitor inside the ADS8332. Figure 34 in the datasheet shows the equivalent circuit.

    In general, this means there is no need for an external sample an hold. The only time I have seen an external used would be to simultaneously sample multiple channels, and then the ADS8332 or similar ADC can scan through and convert each of the samples. However, when simultaneous sampling is required, there are ADC's that have this capability already included.

    For most applications using the ADS8332, an external sample and hold is not needed. If the customer requires simultaneous sampling for multiple channels, there are several other ADC options. An example is the ADS8588H 16b, 8 channel simultaneous sampling ADC.

    Keith N.
    Precision ADC Applications
  • Hi Keith,

    Thank you very much for your detail explanation. Thanks!

    Best regards,

    Takeshi Sasaki