Key features

• 16-bit high-resolution analog-to-digital conversion
• 4 single-ended or 2 differential input channels
• Built-in Programmable Gain Amplifier (PGA) up to 16x
• Wide supply voltage range: 2.0V to 5.5V
• 3.3V and 5V logic compatible
• Programmable data rate: 8 SPS to 860 SPS
• Single-shot or continuous conversion modes
• Internal low-drift voltage reference and oscillator
• Built-in programmable comparator with ALERT output
• Four pin-selectable I2C addresses (0x48 to 0x4B)
• Ultra-low power consumption: 150µA in continuous mode
• Compact breakout board with breadboard-friendly headers

Good to know

• Do not exceed VDD + 0.3V on any analog input — exceeding this will damage the chip. Use external clamping diodes if necessary.
• When using PGA settings above VDD (e.g., ±6.144V with 3.3V supply), the full-scale code range above VDD is unused; actual maximum measurable voltage is limited to VDD.
• Connect ADDR pin to GND, VDD, SDA, or SCL to select one of four I2C addresses. Default is 0x48 if left floating (internal 10K pull-down).
• In single-ended mode, resolution is effectively 15-bit (one bit used for sign). Use differential mode for full 16-bit resolution.
• Both differential inputs must remain positive relative to GND; differential mode measures relative difference, not negative ground-referenced voltages.
• Install a 0.1µF decoupling capacitor close to VDD and GND pins for stable operation.
• Store in anti-static packaging when not in use to prevent ESD damage.