Hi TI support team,
at the moment we are planning a new design for optical detections systems. The new part LMH32401 seems to be very interesting for our apltication but there is one thing that is not clear to us. In the datasheet you find the follwing description:
Does that mean using PD with opposite biasing where the cathode has a high positve voltage and Anode ist connected to the input of TIA will not work or is there a way to make it work? After checking quite a lot of APD power supplies I could not find any which directly brings out a negative APD- voltage for biasing. They will bring out a postive voltage with reference to GND. Maybe I did not have the right keywords.
So questions is: What circuit do you recommend for optimal biasing?
Any hint, suggest or help is very welcomed.
Thanks in advance.