Microchip Technology Inc., a leading provider of microcontroller, analog and Flash-IP solutions, introduced a 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 industry-leading accuracy, with a signal-to-noise and distortion (SINAD) of 91 dB (typical) and total harmonic distortion (THD) of -100 dB (typical). Additional integrated features include programmable gain amplifiers (PGAs), a low-drift voltage reference and phase-delay compensation, for a reduced external component count that increases design flexibility and lowers costs. The MCP3903 AFE is ideal for the utility and industrial markets, such as in utility meters, power-monitoring devices and instrumentation devices.

Six-Channel Analog Front End for Three-Phase Energy MeteringGovernment regulations and trends in smart metering, along with the Advanced Metering Infrastructure, have dramatically increased the need for products that offer precise measurements in multi-phase energy metering, while simplifying designs and reducing costs. 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 Six-Channel Analog Front End for Three-Phase Energy Metering is available in a 28-pin SSOP package for $3.14 each, in 10,000-unit quantities. Samples and Volume-production quantities can be ordered at http://www.microchip.com.