描述 Description

The MCP3905A/05L/06A 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.

特性 Features

? Supplies active (real) power measurement for

single-phase, residential energy metering

? Supports IEC 62053 International Energy

Metering Specification and legacy IEC

1036/61036/687 Specifications

? Two multi-bit, DAC, second-order, 16-bit,

DeltaSigma Analog-to-Digital Converters (ADCs)

? Reduced pulse width of calibration output

frequency and mechanical counter drive for low

power meter designs (MCP3905L)

? Increased output frequency constant options for

meter design (MCP3905L)

? 0.1% typical measurement error over 500:1

dynamic range (MCP3905A / MCP3905L)

? 0.1% typical measurement error over 1000:1

dynamic range (MCP3906A)

? Programmable Gain Amplifier (PGA) for small

signal inputs supports low value shunt current sensor:

- 16:1 PGA - MCP3905A / MCP3905L

- 32:1 PGA - MCP3906A

? 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 real power on HFOUT for

meter calibration