Secondary protection for ADC.

[fredhdx573]

Hello everyone,

I have an ADC connected to an output PAD, and I'm facing a challenge regarding its input resistance. The ADC specification states that it cannot accommodate any input resistance greater than 50 Ohms. However, the secondary ESD (Electrostatic Discharge) protection requires a series resistance of at least 200 Ohms.

I would greatly appreciate your guidance on how to effectively implement the secondary ESD protection for the ADC while considering this conflicting requirement of the input resistance.

Thank you in advance for your assistance

Thanks and Best Regards,
Fred

 

[KlausST]

Hi,

maybe by using a buffer...

Klaus