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मूल्य सूची: Retail Price (B2C) मूल्य सूची
मूल्य सूची: Retail Price (B2C) मूल्य सूची
I2C ADS1115 16-Bit ADC 4-channel Module with Programmable Gain Amplifier

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

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SpecificationDetails
Operating Voltage2.0V to 5.5V DC
Resolution16-Bit
Programmable Data Rate8 SPS to 860 SPS
Analog Inputs4 Single-Ended or 2 Differential
Current Consumption150 µA (Continuous Mode)
InterfaceI2C (Up to 4 Selectable Addresses)
Input Voltage Range±0.256V to ±6.144V (via PGA)
Price
₹ 135.59 ₹ 135.59
(Tax included)

Product Description

The ADS1115 Breakout Board is engineered for high-fidelity data acquisition. It features an internal low-drift voltage reference and an oscillator, ensuring stable readings across a wide temperature range of -40°C to +125°C. The module is highly flexible, supporting four single-ended inputs or two differential pairs, which is particularly useful for measuring bridge-based sensors like load cells. Its ultra-low power consumption and automatic shut-down mode make it an excellent choice for battery-operated IoT devices.

Key Features

  • Superior Resolution: Offers 65,536 levels of measurement, providing 16 times more detail than a standard 12-bit ADC.

  • Programmable Gain (PGA): Allows you to fine-tune the input range. For example, you can set the range to ±0.256V to measure millivolt signals with a resolution of roughly 7.8 microvolts.

  • Address Selectability: By connecting the ADDR pin to GND, VDD, SDA, or SCL, you can change the I2C address, allowing up to four modules (16 channels) on a single bus.

  • Integrated Comparator: Includes a programmable digital comparator that can trigger the ALRT pin when a signal exceeds a predefined threshold, perfect for overvoltage protection.

  • Noise Reduction: The breakout board typically includes ferrites to separate analog and digital ground planes, keeping high-frequency noise out of your measurements.

Technical Details

  • Dimensions: Approx. 28mm x 17mm.

  • Communication: Standard, Fast, and High-Speed I2C modes.

  • Package: Breakout board with 0.1-inch (2.54mm) pin headers.

Prototyping and Engineering Tips from Robogears

  • Gain vs. Voltage: While the PGA can be set to ±6.144V, the module cannot actually measure voltages higher than VDD + 0.3V. If you are powering the module with 5V, do not apply more than 5.3V to the analog pins, regardless of the gain setting.

  • Differential Measurements: Use differential mode (e.g., AIN0 minus AIN1) when measuring very small signals in noisy environments. This effectively cancels out common-mode noise that affects both wires equally.

  • The ADDR Pin: To set the I2C address, connect the ADDR pin as follows: GND (0x48), VDD (0x49), SDA (0x4A), or SCL (0x4B). The default is typically 0x48 (GND).

  • Speed vs. Precision: For the most stable readings, use a lower SPS (Samples Per Second) setting. Higher data rates introduce more noise into the 16-bit measurement.

Package Includes

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

  • 1 x Male Header Strip (Unsoldered)

Disclaimer

Ensure that the input voltage never exceeds the supply voltage (VDD) by more than 0.3V. Applying 12V to an analog input while the module is powered at 5V will permanently damage the IC.