71M6513-IGT/F is a high-precision single-phase energy metering SoC (System-on-Chip) developed by Maxim Integrated (now part of Analog Devices), specifically designed for smart electricity meters and energy monitoring applications. The device integrates a 22-bit Delta-Sigma ADC, a dedicated metering engine, an RTC (Real-Time Clock), an LCD driver, and multiple communication interfaces, and complies with international energy metering standards such as IEC 62053 and ANSI C12.16.

Key Application Areas

1. Smart Electricity Meters

• Single-phase residential electricity metering (household energy meters)
• Prepaid meters (supporting IC card or remote top-up)
• Time-of-Use (TOU) billing meters
• Remote reading terminals for AMR/AMI (Automatic Meter Reading / Advanced Metering Infrastructure) systems

2. Energy Monitoring and Management Systems

• Energy data acquisition modules in Home Energy Gateways (HEGs)
• Sub-metering in industrial/commercial distribution panels
• Solar/PV system energy generation monitoring
• Energy metering units in electric vehicle (EV) charging stations

3. Industrial Automation and Building Control

• Circuit-level energy submetering in buildings (lighting, HVAC, outlets, etc.)
• Equipment energy consumption monitoring in factories
• Energy efficiency analysis terminals

4. Basic Power Quality Monitoring

• Real-time measurement of voltage, current, frequency, and power factor
• Event logging for overvoltage, undervoltage, and overcurrent conditions
• Harmonic estimation (based on sampled waveform data)

Key Features Enabling These Applications

• High-Accuracy Metering:

  • Better than 0.5% active energy accuracy over a wide current range
  • Measures full set of parameters: active/reactive/apparent energy, voltage, current, power, frequency, and power factor

• High Integration:

  • Integrated 8051-compatible microprocessor (MPU) running up to 10 MHz
  • 22-bit Delta-Sigma ADC + dedicated CE (Computational Engine) for hardware-accelerated metering, reducing CPU load
  • Built-in LCD driver (supports up to 192 segments) for direct display driving
  • RTC with optional temperature compensation for calendar functions and TOU billing

• Rich Communication Interfaces:

  • UART, SPI, I²C
  • Isolated pulse output for meter calibration
  • Interfaces to PLC (Power Line Communication), RF, or RS-485 modules for remote connectivity

• Security and Reliability:

  • Built-in watchdog timer, power-on reset, and brown-out detection
  • Supports anti-tamper features (e.g., reverse current detection, cover-open sensing inputs)
  • Compliant with international standards: IEC 62053-21/22, ANSI C12.16

• Package and Operating Conditions:

  • LQFP-64 package (IGT suffix)
  • Industrial temperature range: –40°C to +85°C, suitable for demanding power environments

✅ Summary:
The 71M6513-IGT/F is a highly integrated SoC tailored for single-phase smart metering and precision energy measurement. Thanks to its high metrology accuracy, rich on-chip peripherals, and compliance with global standards, it is widely deployed in smart grid infrastructure, residential energy management, and industrial energy monitoring systems, serving as a core component in advanced electricity metering terminals.