TLV5620: VREF input impedance

Hi,

If you look at the datasheet, reference input impedance is not directly mentioned, but reference input current is mentioned for a reference voltage.

Its max 10uA for 1.5V, so roughly 150 Kilo ohms. I can safely say that reference input impedance is min 150K.

Also you can see the simplified reference circuit in datasheet as well.

Hope this clarifies your query.

Regards,

AK