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 (

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