MCP3905屬于集成電路（IC）的電能計(jì)量。由美國微芯科技公司制造生產(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)中的高精度電能測量。這些器件可以測量線路電壓和電流，并且可以計(jì)算有功、無功和視在電能，以及瞬時均方根電壓和電流。

描述 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 (

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)

? 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