ADS1115 (often referred to as the ADS115) is a high-precision, low-power 16-bit analog-to-digital converter (ADC).
Resolution:16-bit
Analog inputs:4 channels
Interface:I²C
Supply:Typically 2.0–5.5 V
Arduino Uno pins:SDA =A4, SCL=A5
Programmable gain:Yes
Typical use:Sensors, voltage/current measurement, precision analog signals