Features

• 16-bit ΔΣ ADC with Differential Inputs:
  • 2 channels: MCP3426 and MCP3427
  • 4 channels: MCP3428
• Differential Input Full Scale Range: -VREF to +VREF
• Self Calibration of Internal Offset and Gain per Each Conversion
• On-Board Voltage Reference (VREF):
  • Accuracy: 2.048V ± 0.05%
  • Drift: 15 ppm/°C
• On-Board Programmable Gain Amplifier (PGA):
  • Gains of 1,2, 4 or 8
• INL: 10 ppm of Full Scale Range
• Programmable Data Rate Options:
  • 15 SPS (16 bits)
  • 60 SPS (14 bits)
  • 240 SPS (12 bits)
• One-Shot or Continuous Conversion Options
• Low Current Consumption (VDD= 3V):
  • Continuous Conversion: 135 µA typical
  • One-Shot Conversion with 1 SPS:
    • 9 µA typical for 16 bit mode
    • 2.25 µA typical for 14 bit mode
    • 0.56 µA typical for 12 bit mode
• On-Board Oscillator
• I2C™ Interface:
  • Standard, Fast and High Speed Modes
  • User configurable two external address selection pins for MCP3427 and MCP3428
• Single Supply Operation: 2.7V to 5.5V
• Extended Temperature Range: -40°C to +125°C

Typical Applications

• Portable Instrumentation and Consumer Goods
• Temperature Sensing with RTD, Thermistor, and Thermocouple
• Bridge Sensing for Pressure, Strain, and Force
• Weigh Scales and Battery Fuel Gauges
• Factory Automation Equipment