The ADS1115 16-Bit ADC 4-Channel Module is a high-precision analog-to-digital converter designed to accurately measure low-level analog signals. With 16-bit resolution and programmable gain, it is ideal for sensor interfacing, data acquisition, and measurement systems where higher accuracy is required than standard microcontroller ADCs. It communicates via I²C, making it easy to integrate with Arduino, ESP32, Raspberry Pi, and other embedded platforms.
Core Module Specifications
• ADC Type: Delta-Sigma analog-to-digital converter
• ADC IC: ADS1115
• Resolution: 16-bit
• Input Channels: 4 single-ended or 2 differential
Electrical & Interface
• Operating Voltage: 2.0 V – 5.5 V
• Logic Level: Matches supply voltage
• Communication Interface: I²C
• I²C Addresses: 0x48 – 0x4B (configurable)
• Input Type: Single-ended or differential
• Programmable Gain Amplifier: Built-in (PGA)
Performance Characteristics
• High-resolution and low-noise measurements
• Selectable data rates for speed vs accuracy
• Suitable for low-voltage and low-current sensors
• Stable readings for precision applications
Physical Characteristics
• Module Type: PCB-mounted ADC module
• Form Factor: Compact and lightweight
• Pin Headers: Clearly labeled for easy wiring
• Suitable for breadboard and embedded mounting
Compatibility
• Arduino Uno / Nano / Mega
• ESP8266 / ESP32
• Raspberry Pi
• STM32 and other I²C-enabled MCUs
• Precision analog sensor modules
Key Advantages
• Much higher resolution than built-in MCU ADCs
• Programmable gain for wide signal range
• Differential input support
• Easy I²C integration
Technical Insights
• PGA allows measurement of very small voltages
• Differential mode improves noise immunity
• Data rate selection affects noise and response time
• Requires proper grounding for best accuracy
Applications
• Precision sensor measurement
• Current and voltage monitoring
• Battery and power measurement
• Data logging systems
• Industrial and laboratory instrumentation
Pro Tip
• Use short analog signal paths
• Match gain setting to sensor output range
• Add proper decoupling near the module
• Use differential inputs in noisy environments
Package Includes
• 1 × ADS1115 16-Bit ADC 4-Channel Module