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MPL3115A2 I2C VOL value

Question asked by Stephen Thomas on Apr 26, 2016
Latest reply on May 3, 2016 by David Diaz Marin

Hi ,

I have seen the VOL value specified in datasheet for MPL3115A2 for SDA lines as VOLS = 0.1VDDIO  specified for Io=500uA i.e 0.33V @ Io=500uA

as Im using VDDIO 3.3V. I have pull up resistors of 10kOhm connected.


I want to analyse the variation in VOL value i.e my actual sink current 3.3/10k=0.33mA .

Is it possible to obtain the VOL values at this current. Or can it take it like Rds on of MOSFET =0.33/500uA=660Ohm

as use it to calculate the VOL @ 0.33mA as 0.33mA x 660Ohm =0.2178V Will it be correct?