• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 48 subscribers
  • Views 274 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

OPA 188

OPA188: input differential limit

Jerry Chen
Expert 5110 points
Part Number: OPA188
Other Parts Discussed in Thread: OPA2188,

Hi team,

I see OPA188 has +- 0.7 differential limit. Is it due to the diode clamp? I didn't see OPA2188 has this limit in datasheet.

Thanks.

  • 0
    TI__Guru 63580 points

    Jerry,

    Both, OPA188 and OPA2188, have back-to-back input parasitic diodes (not showing it in OPA2188 must have been oversight), which requires the maximum differential voltage of 0.7V UNLESS the input current is limited to 10mA or less - see below.