• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 285 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.

LMH32401: if the -VBIAS of LMH32401 connect to GND directly, what will the negative bias be between Vin- and Vin+

Amelie Zheng
Genius 10865 points
Part Number: LMH32401

Hi Team,

May I ask if the -VBIAS of LMH32401 connect to GND directly, what will the negative bias be between Vin- and Vin+?

If using PD instead of APD, there is no need for a large negative bias, about -0.5V is enough.

  • 0
    Guru 140200 points

    Hi Amelie,

    the input pin of LMH34201 is biased at +2.47V. Of course, the anode of photo detector can be connected to 0V while the cathode is connected to the input pin of LMH34201. A reverse voltage of 2.47V is dropping across the photo detector then.

    Kai