ADE7754AR Analog Devices Inc, ADE7754AR Datasheet - Page 38

• Manufacturer Part Number: ADE7754AR
• Description: IC ENERY METER 3PHASE 24-SOIC
• Manufacturer: Analog Devices Inc

Specifications of ADE7754AR

• Input Impedance: 370 KOhm
• Measurement Error: 0.1%
• Voltage - I/o High: 2.4V
• Voltage - I/o Low: 0.8V
• Current - Supply: 7mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (0.300", 7.50mm Width)
• Meter Type: 3 Phase
• For Use With: EVAL-ADE7754EBZ - BOARD EVALAUTION FOR ADE7754
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AD71049AR; AD71049AR

ADE7754
Watt Mode Register (0Dh)
The phases involved in the active energy measurement of the ADE7754 are defined by writing to the WATMODE register. Table XIV
summarizes the functionality of each bit in the WATMODE register.
Bit
Location
0-2
3-5
6-7
VA Mode Register (0Eh)
The phases involved in the apparent energy measurement of the ADE7754 are defined by writing to the VAMODE register. Table XV
summarizes the functionality of each bit in the VAMODE register.
Bit
Location
0-2
3-5
6-7
Bit
Mnemonic
LWATSEL
WATSEL
WATM
Bit
Mnemonic
LVASEL
VASEL
VAMOD
Default
Value
7
0
Default
Value
7
7
0
7
These bits are used to select each part of the formula separately, depending on the line active
These bits are used to select each part of the formula separately, depending on the line appar-
These bits are used to select separately each part of the formula, depending on the apparent
Description
energy measurement method. The behavior of these bits is the same as WATSEL bits. Bit 2
selects the first term of the formula and so on.
These bits are used to select each part of the formula separately, depending on the active
energy measurement method. These bits are also used to enable the negative power detection
available in Bits 12 to 14 of CFNUM register. See Table XI. Setting Bit 5 to Logic 1 selects
the first term of the formula (VA
second term of the formula (VB
Bit 3 to Logic 1 selects the last term of the formula (VC
nation of these bits can address calibration and operational needs.
These bits are used to select the formula used for active energy calculation.
WATM1
0
0
1
1
Description
ent energy measurement method. The behavior of these bits is the same as VASEL bits. Bit 2
selects the first term of the formula, and so on.
energy measurement method. Setting Bit 5 to Logic 1 selects the first term of the formula
(VA
or (VA
Bit 3 to Logic 1 selects the first term of the formula (VC
bits can address calibration and operational needs.
These bits are used to select the formula used for active energy calculation.
VAMOD1
0
0
1
1
rms
rms
+VC
IA
Table XIV. WATMODE Register
rms
Table XV. VAMODE Register
rms
). Setting Bit 4 to Logic 1 selects the second term of the formula (VB
WAVM0
0
1
0
1
VAMOD0
0
1
0
1
)/2
IB
rms
–38–
or VA
Active Energy Calculation
VA
VA
VA
Reserved.
Apparent Energy Calculation
VA
VA
VA
Reserved.
rms
rms
rms
rms
IB or 0 depending on WATMOD configuration). Setting
IA + VB
(IA – IB) + 0 + VC
IA or VA
(IA – IB) + 0 + VC
IA
IA
IA
IB
rms
rms
rms
rms
+ VB
+ (VA
+ VA
depending on VAMOD configuration). Setting
IB + VC
(IA – IB)). Setting Bit 4 to Logic 1 selects the
rms
rms
rms
+ VC
IB
IB
(IC – IB)
IC
rms
rms
rms
IC
rms
IC or VC
+ VC
+ VC
)/2
IC
rms
rms
rms
). Any combination of these
IB
rms
IC
IC
(IC – IB)). Any combi-
+ VC
rms
rms
rms
IC
rms
rms
REV. 0
IB
rms