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Número de pieza SA9602HSA
Descripción SINGLE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT
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SA9602HSA datasheet

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SA9602HSA pdf
SA9602H
FUNCTIONAL DESCRIPTION
The SA9602H is a CMOS mixed signal Analog/Digital integrated circuit, which performs
power/energy calculations across a power range of 1000:1, to an overall accurancy of
better than Class 1.
The integrated circuit includes all the required functions for 1-phase power and energy
measurement such as two 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 SA9602H generates pulses, the frequency of
which is proportional to the power consumption. The pulse rate follows the instataneous
power consumption measured. Direction information is also provided.
A voltage zero crossover signal, relevant to the positive going half cycle, is available on
pin FMO. This signal can be used to sychronise circuit breaker switching.
1. Power Calculation
In the Application Circuit (Figure 1), the voltage drop across the shunt will be between
0 and 16mVRMS (0 to 80A through a shunt resistor of 200µ). This voltage is
converted to a current of between 0 and 16µA , by means of resistors R and R .
RMS
12
The current sense input saturates at an input current of ±25µA peak.
For the voltage sensor input, the mains voltage (230VAC) is divided down through
a divider to 14V. The current into the A/D converter input is set at 14µA at nominal
RMS
mains voltage, via resistor R4 (1MΩ).
In this configuration, with a mains voltage of 230V and a current of 80A, the output
frequency of the SA9602H power meter chip at FOUT is 1.16kHz. In this case 1 pulse
will correspond to an energy consumption of 18.4kW/1160Hz = 15.9Ws.
2. Analog Input Configuration
The input circuitry of the current and voltage sensor inputs are illustrated below.
These inputs are protected against electrostatic discharge through clamping diodes.
The feedback loops from the outputs of the amplifiers AI and AV generate virtual
shorts on the signal inputs. Exact duplications of the input currents are generated
for the analog signal processing circuitry.
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SA9602HSA arduino
SA9602H
Parts List for Application Circuit: Figure 1
Item Symbol
Description
1 IC-1 SA9602H
2 IC-2 Optocoupler 4N35
3 D1 Diode, Silicon, 1N4148
4 D2 Diode, Silicon, 1N4148
5 ZD1 Diode, Zener, 2.4V, 200mW
6 ZD2 Diode, Zener, 2.4V, 200mW
7 XTAL Crystal, 3.5795MHz
8 R1 Resistor, 1% metal
9 R2 Resistor, 1% metal
10 R3 Resistor, 390k, (230VAC) 1%, metal
11 R4 Resistor, 1M, 1/4W, 1%, metal
12 R5 Resistor, 470, 2W, 5%, carbon
13 R6 Resistor, 24k, 1/4W, 1%, metal
14 R7 Resistor, 24k, 1/4W, 1%, metal
15 R8 Resistor, 680, 1/4W, 1%
16 R9 Resistor, 680, 1/4W, 1%
17 R10 Resistor, 680, 1/4W, 1%
18 R11 Resistor, 2.2K, 1/4W, 1%
19 C9 Capacitor, 100nF
20 C10 Capacitor, 100nF
21 C11 Capacitor, 0.47µF, 250VAC, polyester
22 C13 Capacitor, 100µF
23 C14 Capacitor, 100µF
24 C15 Capacitor, 820nF
25 RSH Shunt Resistor
26 LED Light Emitting Diode
Detail
DIP-14
DIP-6
Colour burst TV
Note 1
Note 1
Note 2
Note 3
Note 1: Resistor (R1 and R2) values are dependant upon the selected value of RSH.
Note 2: Capacitor (C15) to be positioned as close to Supply Pins (V & V ) of IC-1 as
DD SS
possible.
Note 3: See TYPICAL APPLICATIONS when selecting the value of RSH.
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