i have used the wizards help to create a design using the ADA4625-1
my question is - do not have an option for -VS on my board
if i ground this pin would i get only half the amplification?
how else would this effect my design?
It would be best to provide some bias at the non-inverting input pin. Have you already fabricated your board? Do you have an option to add a resistor divider for bias?
not yet fabricated - ref voltage of ~0.2v is enough?
what about connecting the VS to the GND? how would i generate -voltage on a board?
Apologies for the delay in response.
I would put it at around 300mV, to satisfy the output headroom on the ADA4625. This is so the output does not saturate to the negative rail during a no-light condition.