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ADS5560: Input Structure & Input Stage Clarification

Part Number: ADS5560

Team,

Can you share a SPICE model for the ADS5560 or something to show the input structure?

Also, for "Fig. 45 Input Stage", how does this work? Is it discharging the caps after the conversion? Does it discharge the cap and then you have to recharge the cap or is it still charged from before?

Thank you.

  • Bravos,

    There is no SPICE model available, only the IBIS model, which can be found under "tools" on the product folder on the TI website.

    After the ADC samples the signal on the capacitor, the sample switch will close allowing the capacitor to recharge or be updated with the level of the current signal applied to it. The ADC does not discharge the cap, only samples the level it is at.

    Regards,

    Jim