I want to use the AD8015 together with an APD. I have attached a drawing of the circuit diagram.
The APD has approx. 0.5pF and I want to reach a signal frequency of 100MHz.
I use approx. the circuit from Figure 16 from the datasheet (page 7).
My questions are:
1. What is the linear/max. input DC current at the input (Iin, Pin 2) of AD8015?
On page 2 (datasheet) is written a Linear Input Current Range of +/- 30µA, is this value also valid for DC?
2. What happens if the APD draws more current as the 30µA? What is the purpose of the INPUT CLAMPS?
Thanks a lot,