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ADS1115 Analog to Digital Converter Module
ADS1115 Analog to Digital Converter Module
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Description:
The ADS1115 is an ultra-compact, high-precision analog-to-digital converter (ADC) module development board, designed for applications requiring accurate and efficient analog signal conversion. Here are the key features, specifications, and pin descriptions of this module:
Key Features:
- Ultra-Small Package: The ADS1113, ADS1114, and ADS1115 are precision ADCs with 16-bit resolution in a compact QFN package measuring 2mm x 1.5mm x 0.4mm.
- Wide Supply Range: Operates within a supply voltage range from 2.0V to 5.5V, providing flexibility for various power sources.
- Low Power Consumption: Designed for minimal power usage, consuming only 150µA in Continuous Mode and featuring automatic shutdown in single-shot mode.
- Programmable Data Rate: Offers adjustable data rates from 8 samples per second (SPS) to 860 SPS, catering to different data acquisition needs.
- Internal Low-Drift Voltage Reference: Enhances measurement precision with an internal voltage reference.
- Internal Oscillator: Simplifies implementation with a built-in oscillator.
- Internal PGA (Programmable Gain Amplifier): The ADS1114 and ADS1115 include an onboard PGA that supports input ranges from the supply voltage to as low as ±256mV.
- I2C Interface: Facilitates data transfer through an I2C-compatible serial interface, with four selectable I2C slave addresses.
- Flexible Inputs: The ADS1115 provides four single-ended inputs or two differential inputs, offering versatile input options.
- Programmable Comparator: Features a programmable comparator for applications requiring threshold detection, available in ADS1114 and ADS1115.
- Wide Temperature Range: Operates effectively within a temperature range from -40°C to +125°C, suitable for various environmental conditions.
Applications:
The ADS1115 is ideal for a variety of applications, including:
- Portable instrumentation
- Consumer electronics
- Battery monitoring
- Industrial automation
- Precision measurements
Product Parameters:
- Power/Logic Level: 2.0V to 5.5V
-
Low Current Consumption:
- Continuous mode: only 150µA
- Single shot mode: automatic shutdown
- Resolution: 16 bits
- Programmable Sampling Rate: 8 to 860 samples/sec
- Internal Low-Drift Voltage Reference
- Internal Oscillator
- Internal PGA: Up to 16x gain
- I2C Interface: 4-pin with optional address
- Input Configuration: Four single-ended or two differential inputs
- Programmable Comparator
Pin Descriptions:
Pin | Description |
---|---|
VDD | Positive power supply (2.0V to 5.5V) |
GND | Ground, power negative |
SCL | I2C clock line |
SDA | I2C data line |
ADDR | Determines the address of the I2C slave |
ALRT | Digital comparator output or conversion ready signal |
A0 | Differential channel 1 positive input or single-ended channel 1 input |
A1 | Differential channel 1 negative input or single-ended channel 2 input |
A2 | Differential channel 2 positive input or single-ended channel 3 input |
A3 | Differential channel 2 negative input or single-ended channel 4 input |
Summary:
The ADS1115 Analog-to-Digital Converter (ADC) Module is a high-resolution, low-power device offering significant flexibility in input ranges and operational modes. Its compact design, wide supply range, and low power consumption make it well-suited for applications where accuracy and efficiency are critical. With programmable data rates, an internal programmable gain amplifier, and a user-friendly I2C interface, the ADS1115 is an excellent choice for precise and reliable analog signal conversion in various electronic projects.
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