CS5467
11. BASIC APPLICATION CIRCUITS
Figure 14 shows the CS5467 configured to measure
power in a single-phase, 3-wire system while operating
in a single-supply configuration. In this diagram, current
transformers (CT) are used to sense the line currents
and voltage dividers are used to sense the line voltages.
5 k ?
10 k ?
L2
N
L1
500 ?
500
10 ?
2 uF
470 μF
0.1 μF
18
3
0.1 μF
VA+
VD+
R 2 R 1
C V+
13
C Vdiff
VIN2+
CS5467
R V-
C V-
14
VIN2-
PFMON
21
C V+
9
VIN1+
CPUCLK
XOUT
2
1
4.096 MHz
R
1
R 2
R V-
C V-
C Vdiff
10
VIN1-
XIN
28
Optional
Clock
Source
CT
? R Burden
? R Burden
R I+
R
I-
C I-
C I+
C Idiff
19
20
IIN1-
IIN1+
RESET
CS
SDI
SDO
SCLK
23
7
27
6
5
Serial
Data
Interface
CT
? R Burden
? R Burden
R I-
C I-
C I+
C Idiff
15
IIN2-
INT
E2
E1
24
26
25
R I+
16
IIN2+
Pulse Output
Counter
LOAD
LOAD
12
11
VREFIN
VREFOUT
0.1 μF
AGND
17
DGND
4
Figure 14. Typical Connection Diagram (Single-phase, 3-wire – Direct Connect to Power Line)
DS714F3
43
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