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PDF SA9103ESA Data sheet ( Hoja de datos )
| Número de pieza | SA9103ESA | |
| Descripción | SINGLE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH SERIAL INTERFACE | |
| Fabricantes | Sames | |
| Logotipo |  |
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sames
SA9103E
SINGLE PHASE BIDIRECTIONAL POWER/ENERGY
METERING IC WITH SERIAL INTERFACE
FEATURES
n Performs bidirectional active power/ n Operates over a wide temperature
energy measurement
range
n Meets the IEC 521/1036 Specification n Serial interface having a RS232
requirements for Class 1 AC Watt hour
protocol
meters
n Precision voltage reference on-chip
n Protected against ESD
n Tri-state output to allow parallel
n Power consumption rating below 25mW
connection of devices.
n Adaptable to different current sensor
technologies
DESCRIPTION
The SAMES SA9103E Single Phase
bidirectional Power/Energy metering
integrated circuit has a serial interface with
a RS232 protocol, ideal for use with a µ-
Controller. The SA9103E performs the
calculation for active power.
The integrated value for active energy is
accessable through the RS232-Interface
as a 16 bit value.
This innovative universal single phase
power/energy metering integrated circuit
is ideally suited for energy calculations in
applications such as electricitydispensing
systems (ED's), residential municipal
metering and factory energy metering and
control.
The SA9103E 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.
PIN CONNECTIONS
IIN
IIP
VREF
CPON
CPOP
CPIN
CPIP
V DD
TP9
OSC2
1
2
3
4
5
6
7
8
9
10
20 GND
19 IVP
18 CON
17 COP
16 CIN
15 CIP
14 V SS
13 SIN
12 SOUT
11 OSC1
DR-00917
Package: DIP-20
SOIC-20
4353
PDS039-SA9103E-001
1/14
REV. B 14-11-1996
1 page  
SA9103E
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 sense input, the mains voltage (230VAC) is divided down through
a divider to 14V. The resulting current into the A/D converter input is set at 14µA
at nominal mains voltage,via resistor R4 (1MΩ).
In this configuration, with a mains voltage of 230V and a current of 80A, the SA9103E
functions at its optimum conditions, having a margin of 3dB for overload available.
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 A and A generate virtual
IV
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
VDD
IIN
V SS
VDD
IVP
VOLTAGE
SENSOR
INPUT
V SS
AI
AV
DR-00919
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GND
5/14
5 Page 
SA9103E
Figure 2: Application Circuit using a Current Transformer for Current Sensing.
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11/14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet SA9103ESA.PDF ] | |
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