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ADS7830: ADS7830

SONG SHIJI
Prodigy 110 points
Part Number: ADS7830


Dear e2e number；

1、ADS7830   BUILT-IN 2.5V REFERENCE/BUFFER ,

-->>if we use internal reference just need a 0.1uf cap to GND ？How  the different between   ext reference and internal reference ？

2、how to use function pin COM （PIN 11）?  we use this IC only for  monitoring system voltage ；

  • 0
    TI__Expert 4405 points

    Song,

    The ADS7830 offers an internal +2.5V reference as described in the datasheet and if this meets your system requirements, it may be used with a 0.1uF cap placed on the REFIN/OUT pin. If however, you wish to operate the device with a different reference voltage, an external reference may be connected to the same pin with capacitors as per the reference datasheet. Care should be taken to keep the internal reference off using PD1=0, as described in Table 1 and Figure 15/16 while using the external reference.

    The input channels of this device can be configured as single-ended or differential as described in Table 2. If used in single-ended mode, the input signal refers to the COM pin and this needs to be connected to the GND. If used in differential mode, the pairs of channels as described in Table 2 can receive the differential input and COM input is ignored.

    Regards,

    Sandeep