ADS1115

The ADS1115 is a precision, low-power, 16-bit analog-to-digital converter (ADC) with an I2C-compatible interface. It features a programmable gain amplifier (PGA), allowing it to measure a wide range of signal levels, from small sensor outputs to high-voltage signals. The ADS1115 is ideal for data acquisition, sensor measurement, and other applications requiring high-resolution analog-to-digital conversion.

Key Features:

• 16-bit Resolution: High-precision measurement capability
• Programmable Gain Amplifier (PGA): Adjustable gain settings for a wide range of input signals
• I2C Interface: Easy integration with microcontrollers and other I2C-compatible devices
• Four Single-Ended or Two Differential Inputs: Flexible input configuration options
• Low Power Consumption: Suitable for battery-powered applications
• Internal Voltage Reference: Ensures accurate and stable measurements
• Wide Operating Voltage Range: 2.0V to 5.5V

Technical Specifications:

• Resolution: 16 bits
• Number of Channels: 4 single-ended or 2 differential
• Programmable Gain Amplifier (PGA) Settings: ±6.144V, ±4.096V, ±2.048V, ±1.024V, ±0.512V, ±0.256V
• Data Rate: Programmable from 8 to 860 samples per second (SPS)
• Supply Voltage Range: 2.0V to 5.5V
• Current Consumption: 150µA (continuous conversion mode)
• I2C Address: Configurable via address pins (up to four devices on the same bus)
• Operating Temperature Range: -40°C to +125°C
• Package: 10-pin MSOP, 10-pin X2QFN

Applications:

• Sensor measurement
• Data acquisition systems
• Portable instrumentation
• Medical instrumentation
• Battery monitoring
• Industrial process control

Usage:

1. Connect the ADS1115 to the I2C bus of the microcontroller or host device.
2. Configure the PGA, data rate, and input channels using I2C commands.
3. Read the digital output from the ADS1115 to obtain the measured analog voltage.
4. Use the PGA settings to adjust the input range for optimal resolution and accuracy.

Caution:

• Verify the supply voltage and I2C bus voltage levels to avoid damaging the device.
• Handle the device carefully to prevent physical damage or electrostatic discharge (ESD).
• Ensure proper decoupling capacitors are used to minimize noise and ensure stable operation.

Datasheet:
For detailed technical specifications, refer to the ADS1115 Datasheet.