ADS1115 I2C 16Bit 4-channel ADC Module with Programmable Gain Amplifier

ADS1115 I2C 16Bit 4-Channel ADC Module is a precision analog-to-digital converter with a programmable gain amplifier (PGA) and I2C interface. It offers high-resolution 16-bit measurements and is ideal for interfacing analog sensors, voltage monitoring, or signal acquisition in embedded systems. The module supports single-ended and differential inputs, making it versatile for multiple analog input applications.

Key Features:

• 16-Bit Resolution: Offers precise digital conversion of analog signals.
• 4-Channel Input: Supports 4 single-ended or 2 differential channels.
• Programmable Gain Amplifier: Adjustable gain up to 16x for small signal measurements.
• I2C Interface: Simple 2-wire communication with address select jumpers.
• Wide Supply Range: Operates from 2.0V to 5.5V, compatible with 3.3V and 5V systems.

Technical Specifications:

• Resolution: 16 bits
• Input Channels: 4 single-ended or 2 differential
• Input Voltage Range: ±6.144V max (depends on PGA setting)
• Sampling Rate: Up to 860 samples per second (SPS)
• Gain Options: ±6.144V, ±4.096V, ±2.048V, ±1.024V, ±0.512V, ±0.256V
• Communication Interface: I2C
• Operating Voltage: 2.0V to 5.5V
• Current Consumption: ~150μA (continuous mode)

Mechanical Specifications:

• Board Dimensions: Approx. 28mm × 17mm
• Pin Pitch: 2.54mm standard
• Header Type: Male header pins (unsoldered)
• Mounting: Breadboard and PCB friendly

Pinout and Wiring:

• VCC: Supply voltage (2.0V–5.5V)
• GND: Ground
• SCL: I2C clock
• SDA: I2C data
• ADDR: I2C address selection pin
• ALRT: Alert/Ready output pin

Datasheet and Documentation:

• Download ADS1115 Datasheet (PDF)

Applications:

• Sensor Monitoring: Interfaces analog sensors such as temperature, pressure, and light sensors.
• Battery Monitoring: Measures battery voltage levels and variations.
• Data Acquisition: Used in portable DAQ systems and signal logging.
• Industrial Control: Captures analog control signals in automation systems.
• Embedded Projects: Suitable for Raspberry Pi, Arduino, and ESP boards.

Equivalent Models:

• ADS1015: Lower resolution (12-bit) version with similar features
• PCF8591: 8-bit ADC/DAC combo for simple applications
• MCP3424: 18-bit ADC with 4 differential channels and I2C

Package Includes:

• 1 x ADS1115 I2C 16Bit 4-Channel ADC Module