The ADS1115 is a 16-bit ADC that is a great improvement on the Arduino’s ADC resolution or incorporating an ADC into the Raspberry Pi. The ADS1115 is best for lower sample rate data acquisition (f < 1000 samples/sec).

ADS1115 Module Specifications:

• 4 analog channel input

• Gain up to 16x

• 8sps - 860 sps sample rate selection

• I2C communication

• Raspberry Pi and Arduino Compatible

• Supply Voltage 2-5V

• Small Profile

Read more about the ADS1115 on Texas Instrument’s Datasheet