EVAL-ADE7758ZEB【PDF 1/15 页】BOARD EVAL FOR AD7758

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PRELIMINARY TECHNICAL DATA

PreliminaryTechnicalData

FEATURES

Evaluation Board is designed to be used together with

accompanying software to implement a fully functional

Three-Phase Energy Meter (Watt-Hour Meter).

Easy connection of various external transducers via

screw terminals.

Easy modification of signal conditioning components

using PCB sockets.

LED indicators on logic outputs CF, VARCF, and

IRQ.

Optically isolated data output connection to PC parallel port.

Optically isolated frequency output (CF) to BNC.

External Reference option available for on-chip

reference evaluation.

GENERAL DESCRIPTION

The ADE7758 is high accuracy electrical active power

measurement ICs for three-phase applications with a pulse

output. This output is intended to be used for calibration

Evaluation Board Documentation

ADE7758 Energy metering IC

EVAL-ADE7758EB

Windows TM based software is provided with the evaluation

board which allows it to be quickly configured as an energy

meter.

The ADE7758 evaluation board and this documentation,

together with the ADE7758 data sheet provide a complete

evaluation platform for the ADE7758.

The evaluation board has been designed so that the ADE7758

can be evaluated in the end application, i.e., Watt-Hour

Meter. Using the appropriate transducers on the current

channel (e.g., CT) the evaluation board can be connected to

a test bench or high voltage (240V rms) test circuit. On-board

resistor dividers networks provide the attenuation for the line

voltages. This application note also describes how the current

transducers should be connected for the best performance.

The evaluation board requires two external 5V power sup-

plies (one is required for isolation purposes) and the appro-

priate current transducers.

purposes. The ADE7758 incorporate ADCs, reference cir-

cuitry, and all the signal processing required to perform

energy measurement.

The ADE7758 provides per phase Active, Reactive, and

Apparent Energy information, RMS values, and temperature

measurement via a serial interface. This documentation

describes the ADE7758 evaluation kit Hardware and Soft-

ware functionality. The evaluation board (watt-hour meter)

is configured via the parallel port of a PC. The data interface

between the evaluation board and the PC is fully isolated.

FUNCTIONAL BLOCK DIAGRAM

AV DD AGND

DV DD

DGND

+5V

V+

V-

IAP

IAN

74HC08

DOUT

SCLK

DIN

IBP

IBN

ICP

ICN

VCP

Filter

Network

Filter

Network

ADE7758

74HC08

RESET

Connector to

PC Parallel

Port

GND

VBP

VAP

GND

Attenuation

Optional External

2.5V Reference

AD780

BNC

External

Clock in

CF VARCF

IRQ

Isolated Frequency

output

BNC

VARCF

PROTOTYPE

AREA

REV. PrB 08/03

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 617/329-4700 Fax: 617/326-8703

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