I am working on a trace gas analyzer that requires an extremely high gain, low noise input stage and I have had very good results using Analog Devices' OP77 with a huge feedback resistor (10G ohm) and a gain of 1000. My input is DC and always positive.
Up until now I have powered this with ±5V. Can this device operate on +5V power alone and, if so, what is the disadvantage?
If this can't be done can you recommend an alternative device?
Up until now I have powered this with ±5V. Can this device operate on +5V power alone and, if so, what is the disadvantage?
If this can't be done can you recommend an alternative device?