I'm using the LL08 and have some questions about the bandgap buffer amp. The datasheet seems to hint that the buffer draws a bit of current, but does not specify how much. My application runs at an average draw in the 10 uA range and I do see a lot more draw if I leave the buffer on all the time.
So I turn the buffer on before making an ADC measurement (once a second) and then turn it off afterwards. But doing this, the reading is extremely sensitive to temperature. I added a small delay after turning on the buffer and before starting the ADC conversion and the problem seems to have gone away, but I'm still testing it. I assume the buffer needs time to settle.
Any help on this? What is the bandgap buffer current draw and settling time? I believe the datasheet is mute on this.