SA9108F
TWO PHASE BIDIRECTIONAL POWER/ENERGY
METERING IC WITH INSTANTANEOUS PULSE OUTPUT
FEATURES
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Performs bidirectional one or two 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
Adaptable to different types of current
sensors
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Excellent long term stability
Easily adaptable to different signal
levels
Precision voltage reference on-chip
Two pulse rate output formats available
Protected against ESD
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DESCRIPTION
The SAMES SA9108F Two Phase bidirec-
tional Power/Energy metering integrated
circuit generates pulse rate outputs for
positive and negative energy directions,
the frequency of which is proportional to the
power consumption. The SA9108F
performs the calculation for active power.
The method of calculation takes the power
factor into account.
Energy consumption is determined by the
power measurement being integrated over
time.
The output of this innovative universal two
phase power/energy metering integrated
circuit is ideally suited for applications such
as residential and industrial energy metering
and control.
The SA9108F integrated circuit is available
in 40 pin dual-in-line plastic (DIP-40), as
well as 44 pin plastic leaded chip carrier
(PLCC-44) package types.
PIN CONNECTIONS
CIN1
CIP2
CIN2
TP4
TP5
IIN1
IIP1
IIN2
IIP2
1
2
3
4
5
6
7
8
9
40
39
CIP1
COP1
38
CON1
37
CON2
COP2
35
GND
34
IVP1
36
33
IVP2
32
TP32
31
TP10
10
TP11
11
COPP
12
CONP
CIPP
14
CINP
15
V SS
16
TP17
17
TP18
18
OSC1
19
OSC2
20
DR-00940
13
TP31
30
TP30
VREF
28
V DD
29
TP27
26
TP26
27
25
24
DIR
TP24
23
FOUT2
22
TP22
21
FOUT1
Package: DIP-40
1/12
4364
PDS039-SA9108F-001
Rev. B
09-01-97
SAMES [ SAMES ]
