MCP3905L

The MCP3905L 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 MCP3905L 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. The MCP3905L offers reduced pulse width of calibration output frequency and mechanical counter drive for low power meter designs.

Features
  • Supplies active (real) power measurement for single-phase, residential energy metering
  • Supports IEC 62053 International EnergyMetering Specification and legacy IEC1036/61036/687 Specifications
  • 16-bit, Delta-Sigma Analog-to-Digital Converters (ADCs)
  • Reduced pulse-width of calibration outputfrequency and mechanical counter drive for lowpower meter designs (MCP3905L)
  • Increased output frequency constant options formeter design (MCP3905L)
  • 0.1% typical measurement error over 500:1dynamic range (MCP3905A / MCP3905L)
  • Programmable Gain Amplifier (PGA) for smallsignal inputs supports low value shunt currentsensor
  • Ultra-low drift on-chip reference: 15 ppm/°C (typical)
  • Direct drive for electromagnetic mechanicalcounter and two-phase stepper motors
Parameter
Parameter Name Value Value
Measurement Error 0.1% 0.1%
Dynamic Range 500:1 500:1
Voltage Reference Drift ppm typ 15 15
PSRR % typ 0.01% 0.01%
Temp. Range (°C) -40 to 125 -40 to 125
Analog Supply Voltage AVdd Range (V) 4.5 to 5.5 4.5 to 5.5
Digital Supply Voltage DVdd Range (V) 4.5 to 5.5 4.5 to 5.5
Documents
MCP3905A/05L/06A Data SheetData Sheets07/22/2011535KB
AN994 - IEC Compliant Active-Energy Meter Design Using the MCP3905A/6AAppNote10/02/2009554KB
Quick Guide to Microchip Development ToolsBrochures10/15/201411223KB
Analog & Interface Product Selector GuideProduct Line Card03/21/20164116KB
MCP3905A/6A Energy Meter Reference Design User's GuideUser Guides08/14/2009322KB
MCP3905A/6A Evaluation Board User's GuideUser Guides08/28/2009565KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MCP3905L-E/SS24SSOP-40C to +125CTUBE2.051.711.551.501.48
MCP3905L-I/SS24SSOP-40C to +85CTUBE1.881.571.421.381.36
MCP3905LT-E/SS24SSOP-40C to +125CT/R2.051.711.551.501.48
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RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MCP3905LT-I/SS0.1865000.43619124SSOP.209inMatte Tine3
MCP3905L-I/SS0.1865000.38983124SSOP.209inMatte Tine3
MCP3905LT-E/SS0.1865000.43619124SSOP.209inMatte Tine3
MCP3905L-E/SS0.1865000.38983124SSOP.209inMatte Tine3
MCP3905A/05L/06A Data Sheet MCP3905L
MCP3905A/05L/06A Data Sheet MCP3905RD-PM1
AN994 MCP3905RD-PM1
AN994 Supplement File S-Domain Shunt Compensation Using RC MCP3905RD-PM1
Quick Guide to Microchip Development Tools ENC28J60
Analog & Interface Product Selector Guide ENC624J600
MCP3905A/6A Energy Meter Reference Design User's Guide MCP3905RD-PM1
MCP3905A/6A Evaluation Board User's Guide MCP3905EV