ADS1115 16-Bit ADC – 4 Channel with Programmable Gain Amplifier
A high-precision ADC for micro-controllers without an internal ADC.
- Wide Supply Range: 2.0V to 5.5V
- Programmable Data Rate: 8SPS to 860SPS
- Internal Low-Drift Voltage Reference
- Internal Oscillator
Top Features:
- 16-bit precision at 860 samples/second
- 4 single-end input channels or 2 differential channels
- Programmable gain amplifier up to x16
- Operates from 2V to 5V power/logic
For micro-controllers without an analog-to-digital converter or when you want a higher-precision ADC, the ADS1115 provides 16-bit precision at 860 samples/second over I2C. The chip can be configured as 4 single-end input channels or two differential channels. It includes a programmable gain amplifier, up to x16, to help boost up smaller single/differential signals to the full range. This ADC can run from 2V to 5V power/logic, measure a large range of signals, and is super easy to use. It is a great general-purpose 16-bit converter.
The chip comes on a breakout board with ferrites to keep the AVDD and AGND quiet. Interfacing is done via I2C. The address can be changed to one of four options so you can have up to 4 ADS1115’s connected on a single 2-wire I2C bus for 16 single-end inputs.
To get you started, we have example code for both the Raspberry Pi (in our Adafruit Pi Python library) and Arduino (in our ADS1X15 Arduino library repository). Simply connect GND to ground, VDD to your logic power supply, and SCL/SDA to your microcontroller’s I2C port and run the example code to start reading data.
* Images are for illustration only; actual product may vary.