Microchip’s first six-channel analogue front-end for three-phase energy metering

26th July 2011
News Release from: Microchip Technology Ltd
Written by : ES Admin
Microchip’s first six-channel analogue front-end for three-phase energy metering
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.
Key Facts:
Integrates six 16-/24-bit ADCs with PGAs, low-drift voltage reference, phase-delay compensation and modulator output block
Industry-leading accuracy with signal-to-noise and distortion (SINAD) of 89 dB
Simultaneously samples six inputs for three-phase power monitoring and metering

Government regulations and trends in smart metering, together with the Advanced Metering Infrastructure, have dramatically increased the need for products that offer precise measurements in multi-phase metering, while simplifying designs and reducing costs. The MCP3903 delivers this functionality by providing a highly accurate solution with integrated features that enhance 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 is available in a 28-pin SSOP package and samples are available today.



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