Hi all,
I am willing to build a spectrometer and was thinking of using the following project as a basis :
https://hackaday.io/project/56937-stm32f4inputsBasically, it is a linear CCD sensor connected to STM32 ADC through an opamp because the CCD does not output voltage in the correct range. However, the conditioning stage in this project looks quite complex. AD8027 being a rail-to-rail opamp, is negative voltage supply really required ?
Datasheet states that :
"The output stage is designed to drive 50 mA of linear output current, 40 mA within 200 mV of the rail, and 2.5 mA within 35 mV of the rail."
I intend to do software processing of the signal anyway so if opamp output is 0.1V-3.3V it would be definitely acceptable.
Is that possible to simply power the opamp from GND/+5V ? Or if AD8027 supply voltage really need to be symmetrical, is there any single-supply opamp that would be equivalent ? I would be happy to prototype but with 4Mhz signal breadboarding is not really an option apparently.
Kind regards