Date: 25/04/2012

Energy measurement analog front end from Microchip with two 24-bit ADCs

Microchip Technology has launched its energy measurement analog front end (AFE), the MCP3911.

AFE features two 24-bit, delta-sigma ADCs that operate at 3V with accuracy of 94.5 dB SINAD and 106.5 dB THD for energy metering and power monitoring performances. There are four different power modes that can be used for either extremely low-power designs, to 0.8 mA per channel, or designs for higher-speed signals and harmonic content. The extended temperature range allows operation from -40°C to +125°C. This device also features analog and digital operation of 2.7 to 3.6V.

"With this expansion of our industry-leading line of energy-measurement analog front ends, Microchip is enabling the rapidly growing global adoption of high-performance smart meters," said Bryan J. Liddiard, marketing vice president of Microchip's analog and interface products division. "The combination of the world's best accuracy with our extensive PIC microcontroller portfolio provides designers with the tools they need to create the best-performing energy meters and power monitors at the lowest cost."

The MCP3911 is available for samples and volume production, in 20-pin SSOP and QFN packages. The MCP3911 evaluation board for 16-bit MCUs (part # ADM00398, $79.99) is also available.

For more details, visit http://www.microchip.com/get/XA2A