ADS1115 CJMCU Analog-Digital Converter Module ( ADC) (resealed)

Overview

For microprocessors that do not have an embedded analog-to-digital converter or if you need precision ADCs, then ADS1115 is the ideal solution. It provides precision on 16 bits with 960 samples / second through the I2C interface. The chip can be configured as 4 single-ended or 2 differential channels. This module is the perfect choice because it can operate between 2V and 5V, it can measure a wide range of signals and is very easy to use.

The chip is small and comes with ferrite to reduce noise. Communication is through the I2C interface. The address can be changed with one of the four options (datasheet table 5) so you can connect up to 4 ADS1115 modules to a single I2C bus.

Connecting to Arduino is done according to the following picture:

For starters we have a code example for both Raspberry Pi (Adafruit Pi Python library) and Arduino (ADS1115 Arduino library). Just connect GND to ground, VDD to power and SCL / SDA to microprocessor I2C ports and run the example code.

Technical specifications

• Supply voltage: 2 V - 5.5 V
• Low current consumption: 150μA
• Internal oscillator
• Internal PGA
• LOW-DRIFT VOLTAGE REFERENCE internal
• I2C interface
• Programmable comparator
• The board uses I2C on 7 bits with addresses between 0x48 and 0x4B

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