hi!
In an instrument I design, I want to sense the battery voltage using one of the analogue input channels of the internal ADC of my MCU. Due to limited VREF of the ADC, after the battery I have put a simple voltage divider. I am thinking of using an opamp as buffer between the voltage divider and the ADC. How could I choose the best opamp for this job, based on what criteria? Is there any particular characteristic of the opamp that plays important role for a buffer?
For example, I have chosen the LPV511, just because it receives single supply at 3V and its current consumption is very low. Is this opamp ok? Should I look for something different?
Thanks a lot!
In an instrument I design, I want to sense the battery voltage using one of the analogue input channels of the internal ADC of my MCU. Due to limited VREF of the ADC, after the battery I have put a simple voltage divider. I am thinking of using an opamp as buffer between the voltage divider and the ADC. How could I choose the best opamp for this job, based on what criteria? Is there any particular characteristic of the opamp that plays important role for a buffer?
For example, I have chosen the LPV511, just because it receives single supply at 3V and its current consumption is very low. Is this opamp ok? Should I look for something different?
Thanks a lot!