Would be possible to use the ADL5317 + Ad8304 as a Silicon photomultiplier (SiPM) current mirror? I use the Hamamatsu MPPC for low light levels. The MPPC Vbias is 74V aprox. and typically the current of the MPPC is lower than 50 nA.
I moved your question about the ADL5317 and AD8304 to the RF community. Someone here should be able to assist you.
The ADL5317 does multiply the APD current, it divides the current by 5. So 50nA of APD current would become 5nA (which is still in the range of the AD8304). This setup should work for you provided that the currents aren't too low. What is the current range of your MPCC?
This application is for detection on very low light levels. The current variation is very small. Notwithstanding, the major contribution is the MPPC dark current and it depends on the bias voltage, so typically the current is in the 5 - 200 nA range.
The board I've made is based in the following circuit:
Previously I tried the MAX4007 and the DS3920 Maxim current mirrors. They are ok but no suitable for low current variations (~1 nA or lower)
As long as you're not operating at high temperatures, you should be able to maintain good error down to 5nA.
The error is dependent on the bias of the APD:
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