Microchip's Six-Channel Analog Front End Three-phase Energy Metering

Microchip Technology Inc., a provider of microcontroller, analog and Flash-IP solutions, has announced its first high-accuracy, stand-alone six-channel analog front end (AFE) for three-phase energy metering. The MCP3903 AFE includes six 16-/24-bit Delta-Sigma analog-to-digital converters (ADCs) and offers accuracy with a signal-to-noise and distortion (SINAD) of 89 dB (typical) and total harmonic distortion (THD) of -99 dB (typical). Additional integrated features include programmable gain amplifiers (PGAs), a low-drift voltage reference and phase-delay compensation.

The MCP3903 delivers this functionality by providing a highly accurate solution with integrated features that enable design flexibility. The MCP3903's six 16-/24-bit Delta-Sigma ADCs enable the simultaneous sampling of six inputs, making it ideal for three-phase power monitoring and metering, while its industry-leading accuracy allows for higher-accuracy products.

"The MCP3903 AFE provides engineers with a highly accurate solution for the growing smart-metering and power-monitoring market," said Bryan J. Liddiard, vice president of marketing with Microchip's Analog and Interface Products Division. "This device's integrated features enable more precise measurements than competing solutions, with reduced design time and lower cost."