MCP3906 Microchip Technology, MCP3906 Datasheet

MCP3906

Manufacturer Part Number

MCP3906

Description

(MCP3905 / MCP3906) Energy-Metering ICs

Manufacturer

Microchip Technology

Datasheet

1.MCP3906.pdf (30 pages)

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Part Number:

MCP3906A-I/SS

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MICROCHIP

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Company:

Meier Automation Equipment Co., Limited

Part Number:

MCP3906A-I/SS

Manufacturer:

MICROCHIP/微芯

Quantity:

20 000

Company:

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Part Number:

MCP3906AT-E/SS

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Part Number:

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Features

• Supplies active (real) power measurement for

• Supports the IEC 62053 International Energy

• Two multi-bit, Digital-to-Analog Converters

• 0.1% typical measurement error over 500:1

• 0.1% typical measurement error over 1000:1

• Programmable Gain Amplifier (PGA) for small-

• Ultra-low drift on-chip reference: 15 ppm/°C

• Direct drive for electromagnetic mechanical

• Low I

• Tamper output pin for negative power indication

• Industrial Temperature Range: -40°C to +85°C

• Supplies instantaneous active (real) power on

US Patents Pending

Functional Block Diagram

single-phase, residential energy-metering

Metering Specification and legacy IEC 1036/

61036/687 Specifications

(DACs), second-order, 16-bit, Delta-Sigma

Analog-to-Digital Converters (ADCs)

dynamic range (MCP3905)

dynamic range (MCP3906)

signal inputs supports low-value shunt current

sensor

- 16:1 PGA - MCP3905

- 32:1 PGA - MCP3906

(typical)

counter and two-phase stepper motors

REFIN/

Energy-Metering ICs with Active (Real) Power Pulse Output

OUT

CH0+

CH1+

CH0-

CH1-

OUT

for meter calibration

of 4 mA (typical)

Reference

2.4V

G0 G1

–

PGA

Multi-level

ΔΣ ADC

16-bit

HPF1

HPF

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 I

shunt (< 200 µOhms) meter designs. It includes an

ultra-low drift voltage reference with < 15 ppm/°C

through a specially designed band gap temperature

curve for the minimum gradient across the industrial

temperature range. A fixed-function DSP block is

on-chip for active (real) power calculation. Strong

output drive for mechanical counters are on-chip to

reduce field failures and mechanical counter sticking. A

no-load threshold block prevents any current creep

measurements. A Power-On Reset (POR) block

restricts

situations. These accurate energy-metering ICs with

high field reliability are available in the industry-

standard pinout.

Package Type

MCP3905/06

24-Pin SSOP

OSC1 OSC2

MCP3905A/MCP3906A

LPF1

Replacement Device:

meter

Obsolete Device

REFIN/OUT

POR

MCLR

performance

CH0+

CH1+

CH0-

CH1-

HPF

GND

and I

MAX

conversion

currents and/or small

E-to-F

during

OUT

NEG

OSC2

OSC1

OUT0

OUT1

DS21948E-page 1

GND

OUT1

OUT

MCLR

OUT0

low-voltage

NEG

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