SA9602EPA Datasheet PDF - Sames
| Part Number | SA9602EPA | |
| Description | SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT | |
| Manufacturers | Sames | |
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sames
SA9602E
SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY
METERING IC WITH INSTANTANEOUS PULSE OUTPUT
FEATURES
n Pin and functionally compatible with the n Total power consumption rating below
SA9102E with reduced external
25mW
components
n Adaptable to different types of current
n Performs unidirectional power and
sensors
energy measurement
n Operates over a wide temperature range
n Meets the IEC 521/1036 Specification n Precision voltage reference on-chip
requirements for Class 1 AC Watt hour
meters
n
Different pulse rate options available
n Protected against ESD
DESCRIPTION
PIN CONNECTIONS
The SAMES SA9602E is an enhancement of
the SA9102E, as no external capacitors are
required for the A/D converters.
The SAMES SA9602E Single Phase
unidirectional Power/Energy metering
integrated circuit generates a pulse rate output,
the frequency of which is proportional to the
power consumption. The SA9602E performs
the calculation for active power.
The method of calculation takes the power
factor into account.
Energy consumption can be 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 residential municipal metering and
factory energy metering and control.
IIN 1
IIP 2
VR EF 3
TEST 4
VDD 5
OSC2 6
OSC1 7
DR-0108 8
14 GND
13 IVP
12 TP12
11 TP11
10 VSS
9 FOUT 2
8 FOUT 1
The SA9602E integrated circuit is available in
both 14 and 20 pin dual-in-line plastic (DIP-14/
DIP-20), as well as 20 pin small outline (SOIC-
20) package types.
Package: DIP-14
4448
PDS039-SA9602E-001 REV. D
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17-06-97
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SA9602E
FUNCTIONAL DESCRIPTION
The SA9602E 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 SA9602E in both DIP-20 and SOIC-20 package options is a direct replacement for
the SA9102E with the advantage of no external loop capacitors.
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 SA9602E generates pulses, the frequency of
which is proportional to the power consumption. Two frequency outputs (FOUT1 and
FOUT2) are available, with a third frequency option available on request. The pulse rate
follows the instataneous power consumption measured.
1. Power Calculation
In the Application Circuit (Figure 1), the voltage drop across the shunt will be between
0
and
16mV
RMS
(0
to
80A
through
a
shunt
resistor
of
200µΩ).
This voltage is
converted to a current of between 0 and 16µARMS, by means of resistors R1 and R2.
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 SA9602E power meter chip at FOUT1 (Pin 12) is 1.16kHz. In this
case 1 pulse will correspond to an energy consumption of 18.4kW/1160Hz =
15.9Ws.
The output frequency at FOUT2 is FOUT1 /290 (i.e. The frequency ouput at FOUT1
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.
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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| Information | Total 14 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ SA9602EPA.PDF Datasheet ] | |
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