OP296 input resistance

Question

Hi, i would like to know the OP296 input resistance. I was wondering if the OP296 works as a transimpedance amplifier with a 1M feedback resistance (so i need that value). any advice?. 
 
 And the same question for ADA4528. 
 Thanks.

FormerMember · Accepted Answer

Mateo, 
 How were you going to use input resistance? It's generally of limited usefulness 
 and for a voltage follower, the input resistance is bootstrapped by the open loop gain 
 at that frequency. For error calculations, input bias current can be used. 
 I would not do a new design with the OP296 which came out in 1995. I would use the next generation, 
 ADA4096-2. 
 Harry)

EZAdministrator · Answer

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OP296 input resistance