EVAL-ADE7752AEBZ datasheet, PDF

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EVAL-ADE7752AEBZ: DescriptionBOARD EVALUATION FOR ADE7752A; CategoryDevelopment board/suite/development tools; File Size319KB，24 Pages; ManufacturerADI; Websitehttps://www.analog.com; Environmental Compliance

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BOARD EVALUATION FOR ADE7752A

EVAL-ADE7752AEBZ Parametric

Parameter Name	Attribute value
type	Power management
Function	Energy/Power Meter
Embedded	-
IC/parts used	ADE7752A
Main attributes	-
What's included	plate
Auxiliary properties	-

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Polyphase Energy Metering IC

with Pulse Output

ADE7752/ADE7752A

FEATURES

High accuracy, supports 50 Hz/60 Hz IEC62053-2x

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

Compatible with 3-phase/3-wire delta and 3-phase/4-wire

Wye configurations

The ADE7752 supplies average real power on frequency

outputs F1 and F2

High frequency output CF is intended for calibration and

supplies instantaneous real power

Logic output REVP indicates a potential miswiring or

negative power for each phase

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

On-chip power supply monitoring

On-chip creep protection (no load threshold)

On-chip reference 2.4 V ±8% (20 ppm/°C typical) with

external overdrive capability

Single 5 V supply, low power

60 mW typical: ADE7752

30 mW typical: ADE7752A

Low cost CMOS process

ADE7752A are the same. Both products are referred to in the

text of this data sheet as ADE7752.

The part specifications surpass the accuracy requirements as

quoted in the IEC62053-2x standard. The only analog circuitry

used in the ADE7752 is in the analog-to-digital converters (ADCs)

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

plication, filtering, and summation) is carried out in the digital

domain. This approach provides superior stability and accuracy

over extremes in environmental conditions and over time.

The ADE7752 supplies average real power information on the

low frequency outputs, F1 and F2. These logic outputs may be

used to directly drive an electromechanical counter or to

interface with an MCU. The CF logic output gives instanta-

neous real power information. This output is intended to be

used for calibration purposes.

The ADE7752 includes a power supply monitoring circuit on

the V

pin. The ADE7752 remains inactive until the supply

voltage on V

reaches 4 V. If the supply falls below 4 V, no

pulses are issued on F1, F2, and CF. Internal phase matching

circuitry ensures that the voltage and current channels are

phase matched. An internal no load threshold ensures the part

does not exhibit any creep when there is no load. The ADE7752

is available in a 24-lead SOIC package.

GENERAL DESCRIPTION

The ADE7752 is a high accuracy polyphase electrical energy

measurement IC. The ADE7752A is a pin-to-pin compatible

low power version of ADE7752. The functions of ADE7752 and

FUNCTIONAL BLOCK DIAGRAM

ABS

IAP

IAN

VAP

ADC

HPF

ADC

LPF

PHASE

CORRECTION

POWER

SUPPLY

MONITOR

IBP

IBN

ADC

HPF

ADC

LPF

ADE7752/

ADE7752A

DGND

VBP

PHASE

CORRECTION

CLKIN

CLKOUT

ICP

ICN

VCP

2.4V REF

ADC

HPF

ADC

LPF

DIGITAL-TO-FREQUENCY CONVERTER

02676-A-001

PHASE

CORRECTION

AGND

REF

IN/OUT

REVP

SCF

Figure 1. 24-Lead Standard Small Outline Package [SOIC]

Rev. C

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

www.analog.com

Fax: 781.461.3113

ADE7752/ADE7752A

TABLE OF CONTENTS

Specifications..................................................................................... 3

Timing Characteristics..................................................................... 4

Absolute Maximum Ratings............................................................ 5

ESD Caution.................................................................................. 5

Pin Configuration and Function Descriptions............................. 6

Typical Performance Characteristics ............................................. 8

Test Circuit ...................................................................................... 10

Terminology .................................................................................... 11

Theory of Operation ...................................................................... 12

Power Factor Considerations.................................................... 12

Nonsinusoidal Voltage and Current ........................................ 13

Analog Inputs.................................................................................. 14

Current Channels ....................................................................... 14

Voltage Channels ........................................................................ 14

Typical Connection Diagrams ...................................................... 15

Current Channel Connection ................................................... 15

Voltage Channels Connection .................................................. 15

Meter Connections..................................................................... 15

Power Supply Monitor ................................................................... 17

HPF and Offset Effects .............................................................. 17

Digital-to-Frequency Conversion ................................................ 18

Mode Selection of the Sum of the Three Active Energies..... 19

Power Measurement Considerations....................................... 19

Transfer Function ........................................................................... 20

Frequency Outputs F1 and F2 .................................................. 20

Frequency Output CF ................................................................ 21

Selecting a Frequency for an Energy Meter Application........... 22

Frequency Outputs..................................................................... 22

No Load Threshold .................................................................... 22

Negative Power Information..................................................... 23

Outline Dimensions ....................................................................... 24

Ordering Guide .......................................................................... 24

REVISION HISTORY

7/05—Rev. B to Rev. C

Added ADE7752A.............................................................. Universal

Changed NEGP Pin Name to REVP................................ Universal

Changes to Table 1.............................................................................3

Changes to Table 6, Table 7 ............................................................21

Changes to Table 8, Table 9, Table 10............................................22

Updated Outline Dimensions ........................................................24

Changes to Ordering Guide ...........................................................24

9/03—Rev. A to Rev. B

Updated Format.................................................................. Universal

Change to Figure 19 ........................................................................15

5/03—Rev. 0 to Rev. A

Changed F

1–5

to F

1–7

............................................................ Universal

Change to Figure 6 ..........................................................................10

Changes to Frequency Outputs F1 and F2 section .....................13

Replaced Table II .............................................................................13

Changes to Examples 1, 2, and 3 ...................................................14

Replaced Table III............................................................................14

Replaced Tables IV, V, and VI ........................................................15

Changes to SELECTING A FREQUENCY FOR AN ENERGY

METER APPLICATION section...................................................15

Changes to NO LOAD THRESHOLD section............................16

Replaced Table VII ..........................................................................16

Rev. C | Page 2 of 24

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