New AFEs for Single-Phase Smart Meters & Power Monitoring

Microchip Technology has announced the completion of its MCP391X energy-measurement Analog Front End (AFE) family.  The MCP3919 and MCP3912 integrate three and four channels of 24-bit, delta-sigma ADC, respectively. They have an accuracy of 93.5 dB SINAD, –107-dB THD, and 112-dB SFDR for precise signal acquisition and higher-perforce end products.microchipMCP391Xafe

Microchip also announced two new tools to aid in the development of energy systems using the new AFEs.  The MCP3912 Evaluation Board (part # ADM00499) and MCP3919 Evaluation Board (part # ADM00573) are each available for $129.99.

The MCP3912 and MCP3919 AFEs are both available today for sampling and volume production, with prices starting at $1.84 each in 5,000-unit quantities.  Both AFEs are offered in 28-pin QFN and SSOP packages.

Source: Microchip Technology

Energy-Measurement AFEs

Microchip_MCP3913The MCP3913 and the MCP3914 are Microchip Technology’s next-generation family of energy-measurement analog front ends (AFEs). The AFEs integrate six and eight 24-bit, delta-sigma ADCs, respectively, with 94.5-dB SINAD, –106.5-dB THD, and 112-dB Spurious-Free Dynamic Range (SFDR) for high-accuracy signal acquisition and higher-performing end products.

The MCP3914’s two extra ADCs enable the monitoring of more sensors with one chip, reducing its cost and size. The programmable data rate of up to 125 ksps with low-power modes enables designers to scale down for better power consumption or to use higher data rates for advanced signal analysis (e.g., calculating harmonic content).

The MCP3913 and the MCP3914 improve application performance and provide flexibility to adjust the data rate to optimize each application’s rate of performance vs power consumption. The AFEs feature a CRC-16 checksum and register-map lock, for increased robustness. Both AFEs are offered in 40-pin uQFN packages. The MCP3913 adds a 28-pin SSOP package option.

The MCP3913 and the MCP3914 AFEs cost $3.04 each in 5,000-unit quantities. Microchip Technology also announced the MCP3913 Evaluation Board and the MCP3914 Evaluation Board, two new tools to aid in the development of energy systems using these AFEs. Both evaluation boards cost $99.99.

Microchip Technology, Inc.
www.microchip.com