Kendrick:
Hi I have a problem with the ADS1115 converter I need to cover a voltage range of up to 100v.
I am using a single voltage divider that gives approx 5v with 100v.
You should have used a divider that drops to 4volt (4.096volt).
That, with a PGA gain of 1x, should give a ~20% higher resolution.
The ADS1115 is linear, and so is a voltage divider. Assuming the resistors are stable at that voltage.
Post a diagram, pictures of the setup, and your code if you want help.
Leo..