sames
FEATURES
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SA9105A
THREE PHASE UNIDIRECTIONAL POWER/ENERGY
METERING IC WITH PULSE OUTPUT
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Performs unidirectional one, two or
three phase power and energy
measurement
Meets the IEC 521/1036 Specification
requirements for Class 1 AC Watt hour
meters
Operates over a wide temperature
Range
Uses current transformers for current
sensing
Excellent long term stability
Easily adaptable to different signal
levels
Precision voltage reference on-chip
Three pulse rate outputs available
Protected against ESD
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PIN CONNECTIONS
DESCRIPTION
The SAMES SA9105A Three Phase
unidirectional Power/Energy metering
40
CIN1
1
CIP2
2
integrated circuit generates a pulse rate
39
38
CIN2
3
output, the frequency of which is proportional
CIP3
4
37
to the power consumption. The SA9105A
36
CIN3
5
performs the calculations of active power.
6
35
IIN1
The method of calculation takes the power
IIP1
7
34
factor into account.
8
33
IIN2
Energy consumption is determined by the
32
9
IIP2
31
IIN3
10
power measurement being integrated over
IIP3
11
30
time.
29
COPP
12
The output of this innovative universal three
28
CONP
13
phase power/energy metering integrated
CIPP
14
27
circuit, is ideally suited for applications such
26
CINP
15
as residential and industrial energy metering
16
25
V SS
and control.
TP17
17
24
TP18
18
The SA9105A integrated circuit is available
23
OSC1
19
22
in 40 pin dual-in-line plastic (DIP-40), as
21
OSC2
20
well as in 44 pin plastic leaded chip carrier
DR-00838
(PLCC-44) packages types.
Package: DIP-40
CIP1
COP1
CON1
CON2
COP2
GND
IVP1
IVP2
IVP3
COP3
CON3
VREF
V DD
TP27
TP26
TP25
TP24
FOUT3
FOUT2
FOUT1
1/12
4032
PDS039-SA9105A-001
Rev. C
15-08-1995
SAMES [ SAMES ]
