Energy Measurement IC And Reference Design Eye Power Meters

Oct. 8, 2008
Debuting as a team, the MCP3909 energy-measurement IC and 3-phase energy-meter reference design forecast faster development times for power-meter applications. The chip integrates 16-bit delta-sigma a/d converters that are accessible through its SPI,

Debuting as a team, the MCP3909 energy-measurement IC and 3-phase energy-meter reference design forecast faster development times for power-meter applications. The chip integrates 16-bit delta-sigma a/d converters that are accessible through its SPI, while simultaneously providing a pulse output with a frequency proportional to the active-power calculation. It specifies a typical measurement error of 0.1%, dynamic range of 1,000:1, and a power consumption of 4 mA. The reference design includes three MCP3909 chips, plus PIC18F2520 and PIC18F4550 microcontrollers. The PIC18F2520 performs all power calculations, while the PIC18F4550 provides a USB interface. A software package that comes with the design enables meter calibration and the ability to read active/apparent power, RMS current, and RMS voltage. Available in a 24-pin SSOP, price for the MCP3909 is $1.51 each/10,000 and for the reference design (Part # MCP3909RD-3PH1) is $175. MICROCHIP TECHNOLOGY INC., Chandler, AZ. (888) 628-6247.

Company: MICROCHIP TECHNOLOGY INC.

Product URL: Click here for more information

About the Author

Staff

Articles, galleries, and recent work by members of Electronic Design's editorial staff.

Sponsored Recommendations

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!