MCP3905 Overview
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...
MCP3905 Key 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 smallsignal inputs supports low-value shunt current sensor
- 16:1 PGA
- MCP3905
- 32:1 PGA
- MCP3906