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PDF SA9102CSA Data sheet ( Hoja de datos )
| Número de pieza | SA9102CSA | |
| Descripción | SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC PULSE OUTPUT | |
| Fabricantes | Sames | |
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sames
SA9102C
SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY
METERING IC PULSE OUTPUT
FEATURES
s Performs unidirectional power and s Adaptable to different types of current
energy measurement
sensors
s Meets the IEC 521/1036 Specification
requirements for Class 1 AC Watt hour s Operates over a wide temperature
meters
range
s Protected against ESD
s Precision voltage reference on-chip
s Total power consumption rating typically
25mW
s Different pulse rate options available
DESCRIPTION
The SAMES SA9102C Single Phase
unidirectional Power/Energy metering
integrated circuit generates a pulse rate
output, the frequency of which is
proportional to the power consumption.
The SA9102C performs the calculation for
active power.
This method of calculation takes the power
factor into account.
Energy consumption is determined by the
power measurement being integrated over
time.
This innovative universal single phase
power/energy metering integrated circuit
is ideally suited for energy calculations in
applications such as electricity dispensing
systems (ED's), residential municipal
metering and factory energy metering and
control.
The SA9102C integrated circuit is available
in both 20 pin dual-in-line plastic (DIP-20),
as well as 20 pin small outline (SOIC-20)
package types.
2047
PIN CONNECTIONS
IIN 1
IIP 2
VREF 3
CVON 4
CVOP 5
CVIN 6
CVIP 7
V DD 8
NC 9
OSC2 10
DR-00020
20 GND
19 IVP
18 CION
17 CIOP
16 CIIN
15 CIIP
14 V SS
13 FOUT2
12 FOUT1
11 OSC1
Package: DIP-20
SOIC-20
PDS039-SA9102C-001 REV. D
1/12
05-09-1995
1 page  
SA9102C
1. Power calculation
In the Application Circuit (Figure 1), the voltage drop across the shunt will be
between 0 and 16mV (0 to 80A through a shunt resistor of 200µΩ). This voltage is
converted to a current of between 0 and 16µA, by means of resistors R and R .
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 for a nominal
mains voltage, via the resistor R4 (1MΩ).
In this configuration, with a mains voltage of 230V and a current of 80A, the output
frequency of the SA9102C power meter chip at FOUT1 (Pin 12) is 1.16kHz. In this
case 1 pulse will correspond to an energy consumption of 18.4kVA/1160Hz =
15.9Ws.
The output frequency at FOUT2 is FOUT1 /290 (i.e. The frequency ouput at pin 12
is divided by 290).
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, in conjunction with the amplifiers input configuration.
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.
V DD
IIP
CURRENT
SENSOR
INPUTS
V SS
V DD
AI
IIN
V SS
V DD
IVP
VOLTAGE
SENSOR
INPUT
V SS
AV
DR-00502
sames
GND
5/12
5 Page 
SA9102C
Parts List for Application Circuit: Figure 2
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Symbol
IC-1
XTAL
RSH
R1
R2
R3
R4
R6
R7
R8
R9
C1
C2
C3
C4
C9
C10
C11
CT
Description
SA9102C
Crystal, 3.5795MHz
Resistor
Resistor, 1% metal
Resistor, 1% metal
Resistor, 390k, (230VAC), 1% metal
Resistor, 1M, 1/4W, 1%, metal
Resistor, 24k, 1/4W, metal
Resistor, 24k, 1/4W, 1%, metal
Resistor, 2.2k, 1/4W, 5%
Resistor, 2.2k, 1/4W, 5%
Capacitor, 560pF
Capacitor, 560pF
Capacitor, 3.3nF
Capacitor, 3.3nF
Capacitor, 820nF
Capacitor, 100nF
Capacitor
Current transformer
Detail
DIP-20/SOIC-20
Colour burst TV
Note 1
Note 2
Note 2
Note 3
Note 1:
Note 2:
Note 3:
Note 4:
See TYPICAL APPLICATIONS when selecting the value of RSH.
Resistor (R1and R2) values are dependant upon the selected value of RSH.
Capacitor (C9) to be positioned as close to Supply Pins (VDD & VSS) of IC-1,
as possible.
Capacitor (C11) selected to minimize phase error introduced by current
transformer (typically 1.5µF)
ORDERING INFORMATION
Part Number
Package
SA9102CPA
DIP-20
SA9102CSA
SOIC-20
sames
11/12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet SA9102CSA.PDF ] | |
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