AD5121: FAQ

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  • How often can I write to the AD5141’s internal EEPROM?

    Question How often can I write to the AD5141’s internal EEPROM? Answer It depends on the temperature, typical 1Mcycle @ 25C, minimum 100k cycles.
  • Maximum Bandwidth

    Question How do I calculate the maximum bandwidth? Answer As a first order model, the digiPOT performs as a basic RC filter. The capacitance is added by the W pin capacitance and the resistance should…
  • Maximum Current Density

    Question What does maximum current density mean? Answer The maximum current density is the maximum current allowed through the digipot. In potentiometer mode, this isn’t an issue as the resistor is quite…
  • VDD and VLOGIC

    Question How different can Vdd and Vlogic be? Answer Vdd is used as a reference signal for ESD protection. No other supply voltage can be higher than VDD so Vlogic maximum voltage is limited to Vdd.

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