SA9904B
PERFORMANCE GRAPHS
Three Phase Source
VDD
VDD
R1: 1.2
R2: 1.2
R3
R4
C1
IIP1
0.2A
R3: 1.5k
R4: 1.5k
R5: 1.5k
R6: 1.5k
R7: 250k
R8: 1k
R9: 100k
R10: 47k
CT1: TZ76V (2500:1)
R1
R2
to 100A
50Hz AC
Phase 1
GND
R5
C2
R6
CT1
IIN1
IIP2
OSC1
OSC2
0.2A
X1
to 100A
50Hz AC
Phase 2
Same as IIP1 / IIN1
Input Network
IIN2
IIP3
P1:
1k
C1: 22nF
C2: 22nF
C3: 5.6nF
C4: 220nF
C5: 220nF
C6: 1µF
0.2A
to 100A
50Hz AC
Phase 3
Same as IIP1 / IIN1
Input Network
F50
DI
IIN3
SA9904B
Phase angle
between voltage
and current
R7
X1: 3.5795MHz
P1
0ꢀ to 360ꢀ
IVP1
R9
C3
DO
SCK
CS
220V
SPI interface to Controller
50Hz AC
Phase 1
R8
N
N
GND
GND
IVP2
IVP3
Same as IVP1
Input Network
VDD
VDD
220V
50Hz AC
Phase 2
+
2.5V
DC
C4
-
Same as IVP1
Input Network
C6
220V
AGND VREF
VSS
+
50Hz AC
Phase 3
2.5V
DC
GND C5
-
N
N
GND
R10
VSS
VSS
GND
VSS
Figure 4: Test circuit for performance graphs
0.5
0.4
0.5
0.4
0.3
0.2
0.1
0.0
-0.1
-0.2
0.3
0.2
0.1
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
PF = 1
-0.3
-0.4
-0.5
VMains = 100%VNOM
VMains = 50% VNOM
VMains = 115% VNOM
PF = 0.5 LAG
PF = 0.5 LEAD
PF = -1
0.1
1
10
100
0.1
1
10
100
%IMAX
%IMAX
Graph 1: Active Energy, Freq = 50Hz, VMains = VNOM
,
Graph 2: Active Energy, PF = 1, Freq = 50Hz,
Temp = 25°C, VDD-VSS = 5.0V
Temp = 25°C, VDD-VSS = 5.0V
0.5
0.4
0.3
0.2
0.1
0.0
-0.1
-0.2
0.5
0.4
0.3
0.2
0.1
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.3
-0.4
-0.5
Freq = 50Hz
Freq = 45Hz
Freq = 65Hz
VDD-VSS = 5.0V
VDD-VSS = 4.5V
VDD-VSS = 5.5V
0.1
1
10
100
0.1
1
10
100
%IMAX
%IMAX
Graph 3: Active Energy, PF = 1, VMains = VNOM
,
Graph 4: Active Energy, PF = 1, Freq = 50Hz,
VMains = VNOM, Temp = 25°C
Temp = 25°C, VDD-VSS = 5.0V
SPEC-0447 (REV. 7)
29-09-2017
6/18