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PDF SA9105E Data sheet ( Hoja de datos )
| Número de pieza | SA9105E | |
| Descripción | THREE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT | |
| Fabricantes | Sames | |
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SA9105E
THREE PHASE UNIDIRECTIONAL POWER/ENERGY
METERING IC WITH INSTANTANEOUS PULSE OUTPUT
FEATURES
n Performs unidirectional one, two or n Uses current transformers for current
three phase power and energy
sensing
measurement
n Excellent long term stability
n
Meets the IEC 521/1036 Specification
requirements for Class 1 AC Watt hour
n
Easily adaptable to different signal
meters
levels
n Operates over a wide temperature n Precision voltage reference on-chip
range
n Three pulse rate options available
n Protected against ESD
DESCRIPTION
The SAMES SA9105E Three Phase
unidirectional Power/Energy metering
integrated circuit generates a pulse rate
output, the frequency of which is proportional
to the power consumption. The SA9105E
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 three
phase power/energy metering integrated
circuit, is ideally suited for applications such
as residential and industrial energy metering
and control.
The SA9105E integrated circuit is available
in 40 pin dual-in-line plastic (DIP-40), as
well as in 44 pin plastic leaded chip carrier
(PLCC-44) package types.
PIN CONNECTIONS
CIN1
CIP2
CIN2
CIP3
CIN3
IIN1
IIP1
1
2
3
4
5
6
7
40 CIP1
39 COP1
38 CON1
37 CON2
36 COP2
35 GND
34 IVP1
IIN2 8
IIP2 9
IIN3 10
IIP3 11
33 IVP2
32 IVP3
31 COP3
30 CON3
COPP 12
CONP 13
CIPP 14
CINP 15
29 VREF
28 V DD
27 TP27
26 TP26
VSS 16
TP17 17
TP18 18
OSC1 19
OSC2 20
25 TP25
24 TP24
23 FOUT3
22 FOUT2
21 FOUT1
DR-00838
Package: DIP-40
4262
PDS039-SA9105E-001 Rev. B
1/12
15-09-1995
1 page  
PIN DESCRIPTION (Continued)
Pin
PLCC
Pin Designation Description
DIP
12 NC Not connected
24 NC
34 NC
44 NC
SA9105E
FUNCTIONAL DESCRIPTION
The SAMES SA9105E is a CMOS mixed signal Analog/Digital integrated circuit, which
performs three phase power/energy calculations over a range of 1000:1, to an overall
accuracy of better than Class 1.
The integrated circuit includes all the required functions for 3-phase power and energy
measurement such as oversampling A/D converters for the voltage and current sense
inputs, power calculation and energy integration. Internal offsets are eliminated through
the use of cancellation procedures.
The SA9105E generates pulses, the frequency of which is proportional to the power
consumption. Three frequency outputs (FOUT1, FOUT2 and FOUT3) are available. The
pulse rate follows the instantaneous power measured.
1. Power Calculation
In the Application Circuit (Figure 1), the mains voltages from Line 1, Line 2 and Line
3, are converted to currents and applied to the voltage sense inputs IVP1, IVP2 and
IVP3.
The current levels on the voltage sense inputs are derived from the mains voltage
(3 x 230 VAC) being divided down through voltage dividers to 14V. The resulting
input
currents
into
the
A/D
converters
are
14µA
through
the
resistors
R,
15
R
16
and
R.
17
For the current sense inputs the voltage drop across the current transformers
terminating resistors are converted to currents of 16µA for rated conditions, by
means of resistors R8, R9 (Phase 1); R10, R11 (Phase 2) and R12, R13 (Phase 3).
The signals providing the current information are applied to the current sensor inputs
IIN1, IIP1; IIN2, IIP2 and IIN3, IIP3.
In this configuration, with the mains voltage of 3 x 230 V and rated currents of 80A,
the output frequency of the SA9105E energy metering integrated circuit at FOUT1
is 1.16kHz. In this case 1 pulse will correspond to an energy consumption of 3 x 18.4
kW/1160Hz = 47.6 Ws.
The output frequency at FOUT2 is FOUT1/4. At FOUT3 the output frequency is
FOUT1/290.
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5 Page 
Notes:
SA9105E
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11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet SA9105E.PDF ] | |
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