ade7880 Analog Devices, Inc., ade7880 Datasheet - Page 4

• Manufacturer Part Number: ade7880
• Description: Polyphase Multifunction Energy Metering Ic With Harmonic Monitoring
• Manufacturer: Analog Devices, Inc.

ADE7880
FUNCTIONAL BLOCK DIAGRAM
CLKOUT
CLKIN
VAP
VBP
VCP
IAN
IBN
ICP
ICN
INP
INN
IAP
IBP
VN
27
28
23
12
22
13
14
19
18
15
16
7
8
9
PGA1
PGA1
PGA1
PGA2
RESET
4
1.2V
REF
PGA3
PGA3
PGA3
REFin/out
ADC
ADC
ADC
ADC
ADC
ADC
ADC
17
APHCAL
VDD
POR
26
Φ
Φ
TOTAL/FUNDAMENTAL ACTIVE ENERGIES
TOTAL/FUNDAMENTAL ACTIVE ENERGIES
HARMONIC INFORMATION CALCULATION
HARMONIC INFORMATION CALCULATION
Computational Block for Harmonic
FUNDAMENTAL REACTIVE ENERGY
FUNDAMENTAL REACTIVE ENERGY
(see phase A for detailed data path)
(see phase A for detailed data path)
Information on neutral current
AGND
VOLTAGE/CURRENT RMS
VOLTAGE/CURRENT RMS
NIGAIN
25
AVGAIN
APPARENT ENERGY
APPARENT ENERGY
AIGAIN
LDO
FOR PHASE C
FOR PHASE B
AVDD
24
HPFEN of
CONFIG3
HPFEN of
CONFIG3
HPFEN of
CONFIG3
HPF
HPF
HPF
LDO
Figure 1. ADE7880 Functional Block Diagram
DVDD
Integrator
Integrator
5
Digital
Digital
DGND
6
Rev. PrE | Page 4 of 103
x
2
Active & Reactive
phase A current
x
x
Computational
Computational
Information on
2
2
Fundamental
and voltage
Harmonic
Block for
Block for
LPF
Power
LPF
LPF
LPF
APGAIN
NIRMSOS
AVRMSOS
AIRMSOS
2
2
Σ
7
7
APGAIN
APGAIN
Σ
Σ
AWATTOS
Σ
AFWATTOS
AFVAROS
AVRMS
AIRMS
NIRMS
Σ
Σ
Preliminary Technical Data
Digital Signal
Processor
APGAIN
A,B and
Phase
C data
DFC
DFC
DFC
SPI/I2C
HSDC
I2C
CF1DEN
CF2DEN
CF3DEN
:
:
:
33
34
35
29
32
36
38
37
39
2
3
IRQ
IRQ
SS
PM0
PM1
CF1
CF2/HREADY
CF3/HSCLK
SCLK/SCL
MOSI/SDA
MISO/HSD
/HSA
0
1