ADS1115 16-Bit 4-Channel ADC Module
- Product Code:
- 2018-2-681
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- 10
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ADS1115 16-Bit 4-Channel ADC Module (Texas Instruments)
The ADS1115 is a 16-bit resolution, 4-channel ADC module developed by Texas Instruments. It communicates via I2C interface; thanks to its built-in PGA, it measures even very low signal levels with high precision. It is directly compatible with microcontrollers such as Arduino, ESP32, Raspberry Pi, and STM32.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Texas Instruments |
| Model | ADS1115 |
| Resolution | 16-bit |
| Number of Channels | 4 (A0, A1, A2, A3) |
| Operating Voltage | 2V – 5.5V |
| Interface | I2C |
| Sampling Rate | 8 SPS – 860 SPS |
| PGA | ±6.144V – ±0.256V (adjustable) |
| Input Type | Single-ended or differential |
| Address Setting | 4 different I2C addresses via ADDR pin |
| Current Consumption | Very low power |
| Applications | Sensor reading, load cell, voltage measurement, precision analog inputs |
Pin Connections
| Pin | Description |
|---|---|
| VDD | Power input (3.3V or 5V) |
| GND | Ground |
| SCL | I2C clock line |
| SDA | I2C data line |
| ADDR | I2C address selection |
| ALRT | Alarm / data ready pin (optional) |
| A0 | ADC Channel 0 input |
| A1 | ADC Channel 1 input |
| A2 | ADC Channel 2 input |
| A3 | ADC Channel 3 input |
Arduino UNO Connection
| ADS1115 Pin | Arduino UNO Pin |
|---|---|
| VDD | 5V |
| GND | GND |
| SCL | A5 |
| SDA | A4 |
| ADDR | GND (default address 0x48) |
For UNO, I2C pins: SDA = A4, SCL = A5.
ESP32 Connection
| ADS1115 Pin | ESP32 Pin |
|---|---|
| VDD | 3.3V |
| GND | GND |
| SCL | GPIO 22 |
| SDA | GPIO 21 |
| ADDR | GND (0x48 address) |
ESP32 default I2C pins: SDA = 21, SCL = 22.
Package Contents
- 1 x ADS1115 16-Bit 4-Channel ADC Module
