MCP3905
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.
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
- Ultra-low drift on-chip reference: 15 ppm/°C (typical)
- Direct drive for electromagnetic mechanical counter and two-phase stepper motors
- Low IDD of 4 mA (typical)
- Tamper output pin for negative power indication
