Microchip's energy-measurement analog front ends offer high accuracy for three-phase smart meters - Embedded.com

Microchip’s energy-measurement analog front ends offer high accuracy for three-phase smart meters

Microchip Technology Inc.'s next-generation family of energy-measurement Analog Front Ends (AFEs), the MCP3913 and MCP3914, integrate six and eight 24-bit, delta-sigma Analog-to-Digital Converters (ADCs), respectively, with 94.5 dB SINAD, -106.5 dB THD and 112 dB SFDR for high-accuracy signal acquisition and higher-performing end products. 

The MCP3914’s two extra ADCs enable the monitoring of more sensors with one chip, lowering cost and size.  Additionally, the programmable data rate of up to 125 ksps with low-power modes allows designers to scale down for better power consumption or to use higher data rates for advanced signal analysis, such as calculating harmonic content.  These AFEs also feature a CRC-16 checksum and register-map lock, for increased robustness.

Microchip’s new AFEs improve application performance while providing the flexibility to adjust the data rate to optimize each application’s rate of performance versus power consumption.

Microchip also announced two new tools to aid in the development of energy systems using these AFEs.  The MCP3913 Evaluation Board (part # ADM00522) and MCP3914 Evaluation Board (part # ADM00523) can each be purchased today for $99.99.

More information:  MCP3913 and MCP3914 AFEs

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