AnsweredAssumed Answered

ADG1419 and ADG1421 switch

Question asked by guru on Jul 2, 2017
Latest reply on Jul 4, 2017 by Davidforde

I am using ADG1419 analog switch (SPDT) in opamp circuit. The IN pin of switch is driven from microcontroller. After making IN=1, I observed controller pin voltage dropped to 2.4V. When I checked input current of IN pin it was 35 mA. Same switch if driven external supply input, IN pin current is 35 mA. Does this IC have any issue?

 

Later I changed circuit and used ADG1421 (Dual SPST switch), for this switch IN pin current is 3 mA. This is also more than expected.

Outcomes