MCP3905A/05L/06A Data Sheet
http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gifMCP3905A/05L/06A Data SheetThe MCP3905A is an energy measurement IC supporting the IEC 62053 international energy metering specification. The output of the device includes a frequency proportional to the average active (real) power at the inputs as well as a higher frequency output proportional to the instantaneous power for meter calibration. The MCP3905A incorporates two 16-bit delta-sigma ADCs with a progammable gain up to 16, which enable small shunt meter designs for measuring a wide range of Ib and Imax currents. The integrated on-chip voltage reference has ultra-low temperature drift of 15 ppm per degree C. Also on-chip is a fixed-function DSP for active (real) power calculation.
Parameter NameValue
Measurement Error0.1%
Dynamic Range500:1
Voltage Reference Drift ppm typ15
PSRR % typ0.01%
Temp. Range (°C)-45 to 85
Supply Voltage Range (V)4.5 to 5.5
Features
Supplies active (real) power measurement for single-phase, residential energy metering
Supports IEC 62053 International Energy Metering Specification and legacy IEC 1036/61036/687 Specifications
Two multi-bit, DAC, second-order, 16-bit, Delta-Sigma Analog-to-Digital Converters (ADCs)
Ultra-low drift on-chip reference: 15 ppm/°C (typ.)
Low IDD of 4 mA (typ.)
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