This module uses 16-bit ADC chip ADS1115, supports 3.3 ~ 5V wide voltage power supply. The chip

has a precision reference voltage and programmable gain adjustment (PGA), therefore, accurate

acquisition and conversion can be performed for both weak and highly variable signals. So it is also

applicable to all types of applications that the main control board needs to accurately collect the

analog signals.

One ADC module can read analog signals of 4 channels. Because of the on-

board I2C address selection switch, it supports the cascade of two ADC modules and can

read analog signals of 8 channels, it can satisfy the needs of various applications.

Specification



Supply Voltage (VCC): 3.3~5.0V



Analog Signal Detection Range: 0~VCC



Number of Analog Channels: 4



ADC Bits: 16 Bit



Operating Current: 2~3mA (Not include sensor module)



Interface Type: Gravity I2C



Interface Level: High 3.3V, Low 0V



Product Size: 32mm * 32mm(1.26in*1.26in)

Board Overview

Gravity: I2C ADS1115 16-Bit ADC Module(Arduino & Raspberry Pi Compatible)

Num

Label

Description

+

VCC

Power VCC(+3.3~5.0V)

-

GND

Power GND(0V)

C

SCL

I2C Bus Clock Line

D

SDA

I2C Bus Data Line

A

Analog In

Analog Input Channels: A0, A1, A2, A3

ADDR

I2C Address

I2C address selection switch，I2C address: 0x48, 0x49