Microchip announces its first high-accuracy, stand-alone six-channel analogue front-end (AFE) for three-phase energy metering. The MCP3903 AFE includes six 16-/24-bit Delta-Sigma analogue-to-digital converters (ADCs) and offers industry-leading accuracy, with a typical signal-to-noise and distortion (SINAD) of 89 dB and typical total harmonic distortion (THD) of -99 dB.

Additional integrated features include programmable gain amplifiers (PGAs), a low-drift voltage reference and phase-delay compensation resulting in a reduced external component count which increases design flexibility and lowers costs. The MCP3903 AFE is ideal for the utility and industrial markets, such as in utility meters, power-monitoring equipment and instrumentation.

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