SA9903B
R5
R6
R7
R9
NEUTRAL
220k
220k
220k
4.3k
C3
2.2nF
0V
0V
LIVE IN
U1
IIN
0V
R3
R4
1
2
20
19
AGND
IVP
200
200
0V
R8
C2
RSH
100nF
320µ
C1 100nF
R2
100k
0V
15
18
12
17
13
R1
FMO
CS
FMO
CS
IIP
200
200
R10
LIVE OUT
3
14
7
VREF
VSS
SCK
DI
SCK
DI
24k
+2.5V
C4
-2.5V
TEST
DO
DO
220nF
10
11
C6
OSC1
OSC2
1µF
0V
C5
220nF
+2.5V
X1
3.5795MHz
8
VDD
SA9903B
-2.5V
Figure 12: Typical application circuit
Table 3: Component list for typical application
Symbol
U1
Description
Symbol
Description
R101
Resistor, 24k, 1%, metal film
Crystal, 3.5795MHz
Energy metering device, SA9903BSAR
X1
RSH
Shunt Resistor, 40A, 320μ
R1, R21, R3,
R41
C1, C2
C3
C42, C52
C62
Capacitor, 100nF, ceramic
Capacitor, 2.2nF, ceramic
Capacitor, 220nF, ceramic
Capacitor, 1μF, ceramic
Resistor, 200, 1%, metal film
R5, R6, R7
R81
Resistor, 220k, 1%, metal film
Resistor, 100k, 1%, metal film
Resistor, 4.3k, 1%, metal film
R9
Note 1: Resistors R2, R4, R8 and R10 must be positioned as close as possible to the respective device pins
Note 2: Capacitors C4, C5 and C6 must be positioned as close as possible to the VDD and VSS power supply pins
SPEC-0051 (REV. 5)
29-09-2017
14/17
SAMES [ SAMES ]
