ADS1115 16-Bit ADC - 4 Channel with Programmable Gain Amplifier - STEMMA QT / Qwiic

The ADS1115 is a high-precision 16-bit analog-to-digital converter (ADC) providing 860 samples/second over I2C. Ideal for microcontrollers without a native ADC or when higher precision is needed, it supports four single-ended input channels or two differential channels with a programmable gain amplifier up to 16x. The board operates over a wide supply range from 2.0V to 5.5V, making it versatile for various projects.

This compact breakout board features ferrites for low noise on analog lines, an I2C interface with selectable addresses to connect up to four ADS1115 devices on a single bus, and is mounted on a PCB compatible with STEMMA QT for easy plug-and-play connections without soldering. Four mounting holes are provided for secure attachment.

Comes with 0.1" standard header for breadboard or perfboard use. Compatible with SparkFun Qwiic connectors and STEMMA QT cables (sold separately).

Features:

• 16-bit ADC with 860SPS sampling rate
• Four single-ended or two differential input channels
• Programmable gain amplifier (PGA) up to 16x
• Wide operating voltage: 2.0V to 5.5V
• Low current consumption: 150µA continuous mode
• Selectable I2C address (0x48–0x4B)
• I2C interface compatible with STEMMA QT and SparkFun Qwiic
• Compact PCB size: 25.4mm x 17.8mm x 4.6mm
• Includes 0.1" headers and four mounting holes

Example code and wiring guides are available for Arduino, Raspberry Pi, and CircuitPython to help you get started quickly.