@keith1200rs
I have not try without photodiode.
I have put a decoupling capacitors between pin4 and VDD although it is a little bit far away from chip.
I have added my layout to the topic. in the upper part is something else. in the middle, labeled with "1n, 0603" is my decoupling capacitor".
I realize the direction of the photodiode issue.
But in real PCB, Both photodiode are put in this way: anode connected to pin 2, which is "Vdd-1.7", cathode connected to Vdd, so there is 1.7 reverse voltage across the photodiode.
---------- Post added at 21:44 ---------- Previous post was at 21:34 ----------
@ FvM
you mean the output of the photodiode is too large? for S6967 may be so, it has a 50pf. But for **broken link removed**, it only has a 6pF output capacitance. Besides I read someone's Thesis, he was using PDB-C134F together and this AD8015 Transimpedance amplifier.
I dd give the cathode supply voltage 5v, and anode to pin2 which is 5-1.7, that makes a 1.7v reverse voltage across the photodiode.
Besides, I also tried to give cathode more than 10v, which makes the reverse voltage 6.7v, but that does't help.