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LMV861/LMV881 input resistance

Guru 16770 points
Other Parts Discussed in Thread: LMV861, LMV881

Hi

We are about to replace AD823 with TI product.

Additionally, we want to the following requirement.

- Input capacitance > 20pF

-Input resistance > 10Mohm

-Small package (smaller than 1.6mm x 2.9mm if possible)

We found the LMV861 and LMV881, but we can not get input resistance value on the datasheet.

1. LMV861 and LMV881 have Cin spec as follows

LMV861

Common mode input capacitance : 20pF

Differential mode input capacitance : 15pF

LMV881

Common mode input capacitance : 5pF

Differential mode input capacitance : 15pF

LMV881 has small value of common mode input capacitance than differential mode.  Is that correct?

2. What is the input resistance of LMV861 and LMV881?

BestRegards