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  3. Microchip — PAC1711 & PAC1811 42V Power Monitors with I2C and Alert

Microchip — PAC1711 & PAC1811 42V Power Monitors with I2C and Alert

 

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Microchip PAC1711 & PAC1811 Power Monitors

Accurate, high-resolution DC power monitoring for embedded and industrial applications

The PAC1711 and PAC1811 series from Microchip deliver single-channel DC power monitoring with high-side current sensing, bus voltage measurement, and energy accumulation. These devices integrate high-resolution ADCs (12-bit for PAC1711, 16-bit for PAC1811) and digital circuitry that calculates power and accumulates energy over long periods, enabling precise monitoring and control of embedded systems.

Both monitors feature configurable sampling rates, programmable integration periods, and I2C/SMBus interfaces for easy system integration. Built-in alerts notify the system of voltage, current, or power excursions, while real-time calibration and adjustable averaging ensure low-noise, high-resolution results without external filtering.

Key Features

  • High-Precision Energy Monitoring
  • Single-channel high-side DC power sensing
  • PAC1711: 12-bit ADC | PAC1811: 16-bit ADC for higher resolution
  • Accurate long-term energy accumulation for integration periods up to one year
  • Real-time auto-calibration reduces offset error
  • Flexible System Integration
  • I2C/SMBus interface with programmable sampling and one-shot measurements
  • Configurable alert pins for over/under-voltage, overcurrent, or overpower events
  • Supports voltage measurements up to 42V
  • External sense resistor sets full-scale current for flexibility
  • Compact and Ready-to-Use Hardware
  • PAC1711 Click: compact add-on board for real-time voltage, current, and power monitoring
  • Plug-and-play design for embedded computing, battery management, automotive, and industrial systems
  • High-resolution, low-noise measurement without additional filtering
  • Supports long-term energy monitoring and system optimization

Applications

  • Embedded Computing
  • Real-time system power monitoring and optimization
  • Battery Management
  • High-resolution energy tracking for battery-powered devices
  • Automotive & Industrial
  • DC power monitoring for motors, sensors, and industrial controls
  • Networking & Communications
  • Energy and power measurement for servers, routers, and connected devices

Microchip — PAC1711 & PAC1811 42V Power Monitors with I2C and Alert

Comparison & Block Diagram

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Feature Comparison
PAC1811 Block Diagram

PAC1711 – Five Things You Need to Know

PAC1811 – Five Things You Need to Know

Development Boards

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PAC1711 Click MIKROE-6801
Compact and Ready-to-Use Hardware
  • PAC1711 Click: compact add-on board for real-time voltage, current, and power monitoring
  • Plug-and-play design for embedded computing, battery management, automotive, and industrial systems
  • High-resolution, low-noise measurement without additional filtering
  • Supports long-term energy monitoring and system optimization

View Details ↗

PAC1811 Click MIKROE-6862
High-precision 16-bit Evaluation

Experience 16-bit resolution and advanced accumulation registers for precise characterization of system power usage.

View Details ↗