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ADE7978ACPZ-RL Datasheet(PDF) 6 Page - Analog Devices

Part # ADE7978ACPZ-RL
Description  Isolated Energy Metering Chipset for Polyphase Shunt Meters
PDF  125 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADE7978ACPZ-RL Datasheet(HTML) 6 Page - Analog Devices

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ADE7978/ADE7933/ADE7932/ADE7923
Data Sheet
Rev. D | Page 6 of 125
FUNCTIONAL BLOCK DIAGRAMS
HPFEN
BIT
HPF
X2
211
LPF
APGAIN
AV1GAIN
APHCAL
HPF
AIGAIN HPFEN BIT
HPFEN BIT
HPF
COMPUTATIONAL
BLOCK FOR TOTAL
REACTIVE POWER
APGAIN
AVAROS
COMPUTATIONAL
BLOCK FOR
FUNDAMENTAL
ACTIVE AND
REACTIVE POWER
APGAIN
AFWATTOS
APGAIN
AFVAROS
PHASE A,
PHASE B,
PHASE C
DATA
DFC
CF1DEN
:
DFC
CF2DEN
:
DFC
CF3DEN
:
15
14
13
CF1
CF2
CF3/HSCLK
POR
LDO
22
21
20
VDD
GND
LDO
23
DGND
12
RESET
AV2GAIN
ATEMP
AV2RMS
ATGAIN
ATEMPOS
SELECTION BIT
VB/TEMP SENSOR
27
AV2RMSOS
ATEMP0
TEMPCO
1
AIRMSOS
X2
AVRMS
LPF
X2
AIRMS
LPF
AVRMSOS
APGAIN
AWATTOS
LPF
ACTIVE/REACTIVE/APPARENT
TOTAL ENERGIES AND
VOLTAGE/CURRENT RMS
CALCULATION FOR PHASE B
(SEE PHASE A FOR DETAILED
DATAPATH)
ACTIVE/REACTIVE/APPARENT
TOTAL ENERGIES AND
VOLTAGE/CURRENT RMS
CALCULATION FOR PHASE C
(SEE PHASE A FOR DETAILED
DATAPATH)
DIGITAL SIGNAL
PROCESSOR
SPI OR
I2C AND
HSDC
17
SCLK/SCL
19
MOSI/SDA
18
MISO/HSD
16
SS/HSA
11
IRQ1
10
IRQ0
26
ZX/DREADY
25
XTALIN
24
XTALOUT
1
VT_B
2
DATA_B
4
CLKOUT
5
SYNC
6
VT_C
7
DATA_C
8
VT_N
9
DATA_N
27
VT_A
28
DATA_A
3
RESET_EN
DIGITAL
BLOCK
X2
LPF
HPFEN
BIT
HPF
NIGAIN
NIRMS
TEMPCO
NIRMSOS
NTEMP
NTEMP0
1
ADE7978
Figure 2. ADE7978 Functional Block Diagram



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