Adafruit ADS1115 16-Bit ADC - 4 Channel with Programmable Gain Amplifier

For microcontrollers that lack an analog-to-digital converter or when higher precision is required, the ADS1115 offers 16-bit accuracy at 860 samples per second over I2C. Configure it for four single-ended input channels or two differential channels. It includes a programmable gain amplifier up to x16 to enhance smaller signals to their full range.

Operational from 2V to 5V power/logic, it measures a broad range of signals, emphasizing its versatility and ease of use. The compact chip is mounted on a breakout board with ferrites to stabilize AVDD and AGND, interfacing via I2C. The address is adjustable to four options, allowing up to four ADS1115 units on a single 2-wire I2C bus for 16 single-ended inputs.

The breakout includes a 0.1" standard header for breadboard or perfboard use, with four mounting holes for easy attachment. It is crafted in the STEMMA QT form factor, compatible with SparkFun Qwiic I2C connectors for solderless connections to development boards. While a QT Cable isn't included, various options are available to facilitate setup.

Comprehensive support is available with example code for Raspberry Pi, Arduino, and CircuitPython. Quick connections are achieved by linking GND to ground, VDD to logic power supply, and SCL/SDA to the microcontroller's I2C port. Extensive documentation includes wiring diagrams and datasheets to streamline your integration process.