ADE7761

更新时间： 2024-09-30 04:04:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
28页	321K
描述
Energy Metering IC with On-Chip Fault and Missing Neutral Detection

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ADE7761 数据手册

Energy Metering IC with On-Chip

Fault and Missing Neutral Detection

ADE7761

FEATURES

GENERAL DESCRIPTION

High accuracy active energy measurement IC, supports

IEC 687/61036

Less than 0.1% error over a dynamic range of 500 to 1

Supplies active power on the frequency outputs F1 and F2

High frequency output CF is intended for calibration and

supplies instantaneous active power

Continuous monitoring of the phase and neutral current

allows fault detection in 2-wire distribution systems

Current channels input level best suited for current

transformer sensors

Uses the larger of the two currents (phase or neutral) to

bill—even during a fault condition

Continuous monitoring of the voltage and current inputs

allows missing neutral detection

Uses one current input (phase or neutral) to bill when

missing neutral is detected

The ADE7761 is a high accuracy, fault tolerant, electrical energy

measurement IC intended for use with 2-wire distribution

systems. The part specifications surpass the accuracy require-

ments as quoted in the IEC61036 standard.

The only analog circuitry used on the ADE7761 is in the ADCs

and reference circuit. All other signal processing (such as multi-

plication and filtering) is carried out in the digital domain. This

approach provides superior stability and accuracy over extremes

in environmental conditions and over time.

The ADE7761 incorporates a fault detection scheme similar to

the ADE7751 by continuously monitoring both the phase and

neutral currents. A fault is indicated when these currents differ

by more than 6.25%.

Two logic outputs (FAULT and REVP) can be used to indicate

a potential miswiring, fault, or missing neutral condition

(continued on Page 3)

Direct drive for electromechanical counters and 2-phase

stepper motors (F1 and F2)

Proprietary ADCs and DSP provide high accuracy over large

variations in environmental conditions and time

Reference 2.5 V 8% (drift 30 ppm/°C typical) with external

overdrive capability

Single 5 V supply, low power

FUNCTIONAL BLOCK DIAGRAM

AGND

FAULT

POWER

SUPPLY MONITOR

ADE7761

SIGNAL PROCESSING

BLOCK

ADC

HPF

A>B

LPF

B>A

A<>B

ZERO CROSSING

DETECTION

MISSING NEUTRAL

GAIN ADJUST

MISCAL

MISSING NEUTRAL

DETECTION

4kΩ

2.5V

REFERENCE

INTERNAL

OSCILLATOR

DIGITAL-TO-FREQUENCY CONVERTER

REF

RCLKIN

DGND

SCF S1 S0 REVP CF F2 F1

IN/OUT

Figure 1.

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

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与ADE7761相关器件

型号	品牌	获取价格	描述	数据表
ADE7761A	ADI	获取价格	Energy Metering IC with On-Chip Fault and Missing Neutral Detection
ADE7761AARS	ADI	获取价格	Energy Metering IC with On-Chip Fault and Missing Neutral Detection
ADE7761AARS-REF	ADI	获取价格	Energy Metering IC with On-Chip Fault and Missing Neutral Detection
ADE7761AARS-RL	ADI	获取价格	Energy Metering IC with On-Chip Fault and Missing Neutral Detection
ADE7761AARSZ	ADI	获取价格	Energy Metering IC with On-Chip Fault and Missing Neutral Detection
ADE7761AARSZ-RL	ADI	获取价格	Energy Metering IC with On-Chip Fault and Missing Neutral Detection
ADE7761ARS	ADI	获取价格	Energy Metering IC with On-Chip Fault and Missing Neutral Detection
ADE7761ARS-REF	ADI	获取价格	Energy Metering IC with On-Chip Fault and Missing Neutral Detection
ADE7761ARSRL	ADI	获取价格	Energy Metering IC with On-Chip Fault and Missing Neutral Detection
ADE7761B	ADI	获取价格	Energy Metering IC with On-Chip Fault and Missing Neutral Detection

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