AFEs offer high accuracy for smart meters
The MCP3919 and MCP3912 are the latest members of Microchip Technology's high-accuracy, one to eight channel, single- and poly-phase MCP391X energy-measurement AFE family. The additions integrate three and four channels of 24-bit, delta-sigma ADC with claimed industry-leading accuracy of 93.5dB SINAD, -107dB THD and 112dB SFDR for precise signal acquisition and high-performance.
The three-channel MCP3919 suits single-phase energy meters with neutral monitoring, while the four-channel MCP3912 is suitable for single-phase, three-wire energy meters. The highly integrated AFEs also include a low-drift voltage reference, programmable gain amplifiers, phase-delay compensation and cyclic redundancy check.
Energy-metering infrastructure is being upgraded worldwide, with designers demanding increased AFE accuracy and integration for next-gen smart meters. Designers of advanced power-monitoring systems also require these features for applications such as server power supplies and power distribution units, electronic circuit breakers, smart power strips and other DAQ products in the industrial, commercial and consumer markets.
Microchip’s newest AFEs combine high integration and accuracy with the optimal number of channels for single-phase energy measurement. High AFE accuracy also enables energy-meter calibration, reducing production costs.
The MCP3912 Evaluation Board (ADM00499) and MCP3919 Evaluation Board (ADM00573) are also available for $129.99 to aid in the development of energy systems.
Available now for sampling and in production quantities, the MCP3912 and MCP3919AFEs are supplied in 28-pin SSOP and QFN packages.
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