
Maxim presents the 4th generation 71M654x complete Energy Meter SOC
Teridian 71M65xx metering products have long been the (host) System on Chip (SoC) of choice for leading suppliers of smart meters to utilities around the world. The Teridian 71M654x are highly integrated, flexible metering SoCs that support a wide range of residential, commercial, and industrial meter applications with up to Class 0.2 accuracy. The 71M654x metering SoCs also feature a proprietary isolation technology. By using low-cost resistive shunts and optional interfaces to one of the Teridian isolated sensors 71M6xx3, these metering solutions eliminate the need for expensive, bulky current transformers. This, in turn, reduces BOM costs and casing size requirements. The metering design will also benefit from immunity to magnetic tampering and enhanced reliability.
- Superior 0.1% accuracy over 2000:1 current range
- 3 to 7 Channels (I or V)
- Phase compensation
- Temperature compensation
- 32-bit Metrology COMPUTE ENGINE (CE)
- Can be modified to support new & custom metrology requirements
- W + VA + RMS + Anti-tamper + more
- ANSI / IEC
- Standard & custom sensors:
- CT, Shunt, Rogowski Coil (di/dt)
Key benefits
- Best-in-class Accuracy
- Single “platform” for all metering projects
- Flexible/programmable metrology
- Lower BOM cost with proprietary isolation technology
71M654x – The new 4th Generation SOC
- Exceeds IEC 62053/ANSI C12.20 standards
- 0.1% accuracy over 2000:1 current range
- Differential/single-ended analog inputs
- Supports isolated shunt solution using companion digital sensor isolation devices (71M6xxx remote sensors)
- Enhanced RTC with compensation in all power modes
- Improved temperature and battery measurement
- Full-speed MPU clock up to 5MHz(programmable) in Brownout mode
- Low power design (supports lower ADC sampling rate, software configurable)
- Supports dual batteries (two independent battery pins, one dedicated for RTC)
- Larger RAM (5KB)
- NVRAM (128bytes) backed by battery
- Flash programmable via ICE or SPI port
- Two UARTs for IR and AMR
- LCD with 6 common segment drivers

