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PDF SA9605 Datasheet ( Hoja de datos )

Número de pieza SA9605
Descripción THREE PHASE POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT
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SA9605 datasheet

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SA9605 pdf
SA9605A
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 IVN1, IVN2 and
IVN3.
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 SA9605A 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 FOUT1 and FOUT2 represents the absolute sum of the
energy measured on all three phases, regardless of the direction of energy flow
through the current sensors. This measurement method will assist meter
manufacturers to circumvent meter tampering by reversal of the phases.
2. Analog Input Configuration
The current and voltage sensor inputs are illustrated below.
These inputs are protected against electrostatic discharge through clamping
diodes, in conjunction with the amplifiers input configuration.
The feedback loops from the outputs of the amplifiers A and A generate virtual
IV
shorts on the signal inputs. Exact duplications of the input currents are generated
for the analog processing circuitry.
sames
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5 Page

SA9605 arduino
Parts List for Application Circuit: Figure 1
Item Symbol Description
1 IC-1 Integrated SA9605A
2 XTAL Crystal, 3.5795 MHz
3 R1 Resistor, 200k, 1%, ¼W
4 R1A Resistor, 180k, 1%, ¼W
5 R2 Resistor, 200k, 1%, ¼W
6 R2A Resistor, 200k, 1%, ¼W
7 R3 Resistor, 200k, 1% , ¼W
8 R3A Resistor, 180k, 1%, ¼W
9 R4 Resistor, 24k, 1%, ¼W
10 R5 Resistor, 22k, 1%, ¼W
11 R6 Resistor, 22k, 1%, ¼W
12 R7 Resistor, 820, 1%, ¼W
13 R8 Resistor
14 R9 Resistor
15 R10 Resistor
16 R11 Resistor
17 R12 Resistor
18 R13 Resistor
19 R14 Resistor, 22k, 1%, ¼W
20 R15 Resistor, 1M, 1%, ¼W
21 R16 Resistor, 1M, 1%, ¼W
22 R17 Resistor, 1M, 1%, ¼W
23 R18 Resistor
24 R19 Resistor
25 R20 Resistor
26 R21 Resistor, 820, 1%, ¼W
27 P5 Potentiometer, 4.7k
28 P6 Potentiometer, 4.7k
29 P14 Potentiometer, 4.7k
30 C1 Capacitor, electrolytic, 1µF, 6V
31 C2 Capacitor, electrolytic, 1µF, 6V
32 C3 Capacitor, electrolytic, 1µF, 6V
33 C12 Capacitor, 820nF
34 C13 Capacitor, 100nF
35 C14 Capacitor, 100nF
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SA9605A
Detail
DIP-20, SOIC-20
Colour burst TV
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Multi turn
Multi turn
Multi turn
Note 2
Note 2
Note 2
Note 3
11/14

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