EVAL-ADE7816EBZ【PDF 1/48 页】BOARD EVALUATION FOR ADE7816

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Six Current Channels, One Voltage Channel

Energy Metering IC

Data Sheet

FEATURES

Measures active and reactive energy, sampled waveforms,

and current and voltage rms

6 current input channels and 1 voltage channel

<0.1% error in active and reactive energy over a dynamic

range of 1000:1

Supports current transformer and Rogowski coil sensors

Provides instantaneous current and voltage readings

Angle measurements on all 6 channels

2 kHz bandwidth operation

Reference: 1.2 V (drift 10 ppm/°C typical) with external

overdrive capability

Flexible I 2 C, SPI, and HSDC serial interfaces

GENERAL DESCRIPTION

The ADE7816 is a highly accurate, multichannel metering

device that is capable of measuring one voltage channel and up

to six current channels. It measures line voltage and current and

calculates active and reactive energy, as well as instantaneous rms

ADE7816

voltage and current. The device incorporates seven sigma-delta

(Σ-Δ) ADCs with a high accuracy energy measurement core.

The six current input channels allow multiple loads to be measured

simultaneously. The voltage channel and the six current channels

each have a complete signal path allowing for a full range of

measurements. Each input channel supports a flexible gain stage

and is suitable for use with current transformers (CTs). Six on-

chip digital integrators facilitate the use of the Rogowski coil

sensors.

The ADE7816 provides access to on-chip meter registers via either

the SPI or I 2 C interface. A dedicated high speed interface, the

high speed data capture (HSDC) port, can be used in conjunction

with I 2 C to provide access to real-time ADC output information.

A full range of power quality information, such as overcurrent,

overvoltage, peak, and sag detection, is accessible via the two

external interrupt pins, IRQ0 and IRQ1.

The ADE7816 energy metering IC operates from a 3.3 V supply

voltage and is available in a 40-lead LFCSP that is Pb free and

RoHS compliant.

FUNCTIONAL BLOCK DIAGRAM

RESET

REF IN/OUT

DGND

CLKIN 27

1.2V

VRMSOS

PULL_HIGH

CLKOUT 28

VP 15

REF

VGAIN

X 2

LPF

VRMS

ADE7816

PULL_LOW

VN 16

PGA2

ADC

HPF

AWATTOS

AWGAIN

IAGAIN

PCF_A_COEFF

DIGITAL

INTEGRATOR

LPF

SPI/I 2 C

29 IRQ0

IAP 7

ENERGY

32 IRQ1

IAN 8

IBP 9

PGA1

ADC

HPF

COMPUTATIONAL

BLOCK FOR

TOTAL

AVAROS

AVARGAIN

AND RMS

DATA

ALL

CHANNELS

36 SCLK/SCL

38 MOSI/SDA

IBN 12

ICP 13

ICN 14

PGA1

ADC

ENERGY AND RMS CALCULATIONS SEE

CHANNEL A FOR DETAILED SIGNAL PATH

ENERGY AND RMS CALCULATIONS SEE

CHANNEL A FOR DETAILED SIGNAL PATH

REACTIVE POWER

IARMSOS

X 2

LPF

IARMS

I 2 C

HSDC

37 MISO/HSD

39 SS/HSA

35 HSCLK

IDP 23

PGA3

ADC

ENERGY AND RMS CALCULATIONS SEE

CHANNEL A FOR DETAILED SIGNAL PATH

IEP 22

10 NC

PGA3

ADC

ENERGY AND RMS CALCULATIONS SEE

CHANNEL A FOR DETAILED SIGNAL PATH

11 NC

IFP 19

PGA3

ADC

ENERGY AND RMS CALCULATIONS SEE

POR

LDO

20 NC

21 NC

IN 18

CHANNEL A FOR DETAILED SIGNAL PATH

30 NC

VDD

AGND

AVDD

DVDD

Figure 1.

Rev. A

Document Feedback

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.

Technical Support www.analog.com

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