ADE7880ACPZ(RevA) Просмотр технического описания (PDF) - Analog Devices

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ADE7880ACPZ
(Rev.:RevA)

Polyphase Multifunction Energy Metering IC with Harmonic Monitoring

Analog Devices 

Data Sheet

ADE7880

FUNCTIONAL BLOCK DIAGRAM

RESET

4

REFIN/OUT VDD AGND

17

26

25

AVDD

24

DVDD DGND

5

6

POR

LDO

LDO

CLKIN 27

CLKOUT 28

IAP 7

IAN 8

PGA1

VAP 23

IBP 9

IBN 12

PGA1

VBP 22

1.2V

REF

HPFEN OF

DIGITAL

AIGAIN CONFIG3 INTEGRATOR

ADC

HPF

HPFEN OF

APHCAL AVGAIN CONFIG3

PGA3

ADC

HPF

ADC

PGA3

ADC

TOTAL/FUNDAMENTAL ACTIVE ENERGIES

FUNDAMENTAL REACTIVE ENERGY

APPARENT ENERGY

VOLTAGE CURRENT RMS

HARMONIC INFORMATION CALCULATION

FOR PHASE B

(SEE PHASE A FOR DETAILED DATA PATH)

ICP 13

ICN 14

PGA1

VCP 19

VN 18

ADC

PGA3

ADC

INP 15

INN 16

PGA2

ADC

TOTAL/FUNDAMENTAL ACTIVE ENERGIES

FUNDAMENTAL REACTIVE ENERGY

APPARENT ENERGY

VOLTAGE/CURRENT RMS

HARMONIC INFORMATION CALCULATION

FOR PHASE C

(SEE PHASE A FOR DETAILED DATA PATH)

COMPUTATIONAL BLOCK FOR HARMONIC

INFORMATION ON NEUTRAL CURRENT

HPFEN OF

DIGITAL

NIGAIN CONFIG3 INTEGRATOR

HPF

AIRMSOS

27

X2

LPF

AIRMS

APGAIN

X2

LPF

27

AVRMS

AVRMSOS

APGAIN

AWATTOS

LPF

COMPUTATIONAL

BLOCK FOR

FUNDAMENTAL

ACTIVE AND

REACTIVE POWER

APGAIN

AFWATTOS

PHASE A,

PHASE B,

AND

PHASE C

DATA

APGAIN

AFVAROS

COMPUTATIONAL

BLOCK FOR

HARMONIC

INFORMATION ON

PHASE A CURRENT

AND VOLTAGE

NIRMSOS

X2

LPF

DIGITAL SIGNAL

NIRMS PROCESSOR

ADE7880

2 PM0

3 PM1

CF1DEN

DFC

:

33 CF1

CF2DEN

DFC

:

34 CF2/HREADY

CF3DEN

DFC

:

35 CF3/HSCLK

SPI/I2C

I2C

HSDC

29 IRQ0

32 IRQ1

36 SCLK/SCL

38 MOSI/SDA

37 MISO/HSD

39 SS/HSA

Figure 1. ADE7880 Functional Block Diagram

Rev. A | Page 3 of 104

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