AFE4300 Impedance Measurement protection

The Patient & ESD protection block contains only the DC blocking caps and ESD diodes and no other spl. circuitry.

Thanks for that info Praveen.

Does TI recommend a particular ESD Diode part number, since I presume it needs to have a low capacitance value otherwise this will affect the Bioimpedance measurement?

Chris

Good afternoon,

to be sure we accomplish with the security standards and to avoid injecting currents higher than 1 mA for frequency higher thatn 100 kHz  and 100 uA at ower frequencies can you suggest meany chip we can use?

Thanks in advance

Someone can answer my question ,please?

Hello Giuseppe,

Can you paraphrase your question?

Are you looking for an impedance measurement IC that injects currrent lower than 1mA at frequencies higher 100KHz and 100uA at lower frequencies?

What is the excitation frequency range you are looking at?

Good morning,

My question is:

To reduce the current injected at 1 kHz by the AFE4300, to respect the EU directive, and inject a current lower than 100 uA  at this frequency can you please suggest me an IC?

Thank you very much

On the AFE4300, the excitation current can be controlled (from 375 uA to any value lower) by putting an external resistor in series between DAC_OUT and DAC_FILT_IN.

I am not aware of any other TI part.