描述 Description

The MCP3905 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 MCP3905 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. For mechanical counter power meter designs, the MCP3905 has a strong 15 mA drive current to reduce field failures and mechanical counter sticking.

特性 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)
?Ultra-low drift on-chip reference: 15 ppm/°C (typ.)
?Low IDD of 4 mA (typ.)

簡(jiǎn)介

MCP3905屬于集成電路（IC）的電能計(jì)量。由制造生產(chǎn)的MCP3905電能計(jì)量能量計(jì)量集成電路可用于單相、雙相和三相電力線系統(tǒng)中的高精度電能測(cè)量。這些器件可以測(cè)量線路電壓和電流，并且可以計(jì)算有功、無(wú)功和視在電能，以及瞬時(shí)均方根電壓和電流。