Description
The MCP3905/06 devices are energy-metering ICs designed to support the IEC 62053 International Metering Standard Specification. They supply a frequency output proportional to the average active (real) power, as well as a higher-frequency output proportional to the instantaneous power for meter calibration. They include two 16-bit, delta-sigma ADCs for a wide range of IB and IMAX currents and/or small shunt (< 200 µOhms) meter designs.

Features
• Supplies active (real) power measurement for
   single-phase, residential energy-metering
• Supports the IEC 62053 International Energy
   Metering Specification and legacy IEC
   1036/61036/687 Specifications
• Two multi-bit, Digital-to-Analog Converters
   (DACs), second-order, 16-bit, Delta-Sigma
   Analog-to-Digital Converters (ADCs)
• 0.1% typical measurement error over 500:1
   dynamic range (MCP3905)
• 0.1% typical measurement error over 1000:1
   dynamic range (MCP3906)
• Programmable Gain Amplifier (PGA) for small
   signal inputs supports low-value shunt current
   sensor
   - 16:1 PGA - MCP3905
   - 32:1 PGA - MCP3906
• Ultra-low drift on-chip reference: 15 ppm/°C (typ.)
• Direct drive for electromagnetic mechanical
   counter and two-phase stepper motors
• Low IDD of 4 mA (typ.)
• Tamper output pin for negative power indication
• Industrial Temperature Range: -40°C to +85°C
• Supplies instantaneous active (real) power on
   HFOUT for meter calibration