ADS1115 4-Channel 16-Bit ADC Module — I2C, Arduino Compatible

ADS1115 4-Channel 16-Bit ADC Module — I2C, Arduino Compatible

The ADS1115 ADC module adds 4 channels of precision 16-bit analog-to-digital conversion to any Arduino or microcontroller via I2C. Unlike Arduino's built-in 10-bit ADC, the ADS1115 provides 16-bit resolution (65,536 steps) with a programmable gain amplifier (PGA) for measuring small signals accurately. Supports up to 4 single-ended or 2 differential inputs.

Key Specifications

• IC: ADS1115 | Resolution: 16-bit | Channels: 4 single-ended / 2 differential
• Sample rate: 8–860 SPS | PGA: 2/3× / 1× / 2× / 4× / 8× / 16×
• Interface: I2C | Address: 0x48–0x4B (4 selectable)
• Supply voltage: 2.0–5.5V | Current: 150μA
• Input range: ±6.144V max (with 2/3× PGA)
• Compliance: RoHS compliant

Why Choose This?

• ✅ 16-bit resolution — 65× more precise than Arduino's 10-bit ADC
• ✅ Programmable gain amplifier — measure signals from ±256mV to ±6.144V
• ✅ 4 selectable I2C addresses — use up to 4 modules on one I2C bus
• ✅ Differential mode — reject common-mode noise for precision measurements

Typical Applications

• Precision sensor data acquisition (load cells, pressure sensors)
• Battery voltage monitoring with high accuracy
• Strain gauge and bridge sensor measurement
• Arduino analog input expansion with 16-bit precision

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