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SA4301A Datasheet Preview

SA4301A Datasheet

Polyphase Energy Metering IC

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SA4301A pdf
Polyphase Energy Metering IC with Pulse Outputs
and Anti-Tamper Features
SA4301A
ICDC - a division of
FEATURES
1 Meets the IEC62053, CBIP-88 and IS137799-1999
specification requirements for Class 1 AC static watt-
hour meters for active energy
1 Motor drive outputs (MOP, MON) provide average
active power information and can drive an electro-
mechanical counter or an impulse counter directly
1 LED pulse output for calibration purposes supplies
average active power information
1 Configurable for different meter ratings
1 Per phase energy direction indication
1 Per phase missing phase indication
1 Phase sequence error indication
1 Precision on-chip oscillator (70ppm/°C drift)
1 Precision on-chip voltage reference (10ppm/°C drift)
1 On-chip anti-creep function (0.005% of EMAX)
1 Low power consumption (<40mW typical)
1 Measures AC inputs only
DESCRIPTION
The SAMES SA4301A is an accurate polyphase
power/energy metering integrated circuit providing a single
chip solution for three phase energy meters. Very few
external components are required and the chip includes a
direct drive capability for electro-mechanical counters. The
SA4301A does not require an external crystal or voltage
reference. A precision oscillator and a precision voltage
reference to supply the circuitry with a stable frequency and
stable reference currents are integrated on the chip.
The SA4301A metering integrated circuit generates a pulse
output, the frequency of which is proportional to the active
power consumption.
Programmable inputs allow the meter manufacturer to
configure the SA4301A for different meter maximum
currents (IMAX) and nominal voltages (VNOM) without having
to change the stepper motor counter or impulse counter
gear ratio. The LED pulse output follows the average active
power consumption measured and is intended for meter
calibration purposes. In fast calibration mode this output
provides a high frequency pulse rate following the average
active power consumption and can be used for fast
calibration or to interface with a micro-controller.
The SA4301A includes an anti-creep feature preventing any
creep effects in the meter under no-load conditions.
The SA4301A integrated circuit is available in a 24-pin small
outline (SOIC24) RoHS compliant package option.
VDD
IIP1
IIN1
IVP1
IIP2
IIN2
IVP2
IIP3
IIN3
IVP3
AGND
CURRENT
CHANNEL 1
ADC
VOLTAGE
CHANNEL 1
ADC
DIGITAL
OUTPUT
DIGITAL
OUTPUT
SIGNAL PROCESSING
Instantaneous
power
LPF
Average
power
MAINS FAIL ENERGY
DETECTION DIRECTION
CURRENT
CHANNEL 2
ADC
VOLTAGE
CHANNEL 2
ADC
DIGITAL
OUTPUT
DIGITAL
OUTPUT
Instantaneous
power
LPF
Average
power
MAINS FAIL ENERGY
DETECTION DIRECTION
CURRENT
CHANNEL 3
ADC
VOLTAGE
CHANNEL 3
ADC
DIGITAL
OUTPUT
DIGITAL
OUTPUT
Instantaneous
power
LPF
Average
power
MAINS FAIL ENERGY
DETECTION DIRECTION
ANTI-CREEP
THRESHOLD
ABS
|X|
PROGRAMMABLE
ADDER
ANTI-CREEP
THRESHOLD
ABS
|X|
PULSE
GENERATION
ANTI-CREEP
THRESHOLD
ABS
|X|
VOLTAGE REFERENCE
AND
CURRENT BIASING
VREF
VSS
OSCILLATOR
AND
TIMING
Figure 1: Block diagram
POWER ON
RESET
TAMPER
CONDITION
AND
STATUS SIGNAL
DETERMINATION
OUTPUT
MULTIPLEXER
AND
DRIVER
PH/DIR
PH1
PH2
PH3
DIVISION
FOR
CALIBRATION
LED OUTPUT
LED
MODE
CHANNEL
PIN STATE
DETECTION
DIVISION
FOR
COUNTER OUTPUT
COUNTER
DRIVE
BUFFERS
MON
MOP
MS
RA
RB
FMS
SPEC-1538 (REV. 6)
1/23
21-02-2013



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SA4301A Datasheet Preview

SA4301A Datasheet

Polyphase Energy Metering IC

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SA4301A pdf
SA4301A
ICDC – a division of
ELECTRICAL CHARACTERISTICS
(VDD - VSS = 5V ± 10%, over the temperature range -40°C to +85°C, unless otherwise specified. Refer to Figure 2 “Test circuit
for electrical characteristics”.)
Parameter
Symbol
Min Typ Max Unit Condition
General
Supply Voltage:
Positive
Supply Voltage:
Negative
Supply Current:
Positive
Supply Current:
Negative
VDD
2.25 2.5 2.75
V With respect to AGND
VSS
-2.75 -2.5 -2.25
V With respect to AGND
IDD 7.5 10.5 mA
ISS -7.5 -10.5 mA
Analog Inputs
Current Sensor Inputs
(Differential)
Input Current Range
Offset Voltage
Voltage Sensor Inputs
(Asymmetrical)
IRIIP1, IRIIP2, IRIIP3,
IRIIN1, IRIIN2, IRIIN3
VOIIP1, VOIIP2, VOIIP3,
VOIIN1, VOIIN2, VOIIN3
-25
-4
25 µA Peak value
4
mV
With R = 4.7kconnected
to AGND
Input Current Range
Offset Voltage
IRIVP1, IRIVP2, IRIVP3
VOIVP1, VOIVP2, VOIVP3
-25
-4
25 1A Peak value
4
mV
With R = 4.7kconnected
to AGND
Digital Inputs
Pull-up/down Current on
RA, RB, MS, FMS*
State Change Detection
Time for Digital Inputs
IPUD
TST
1.5
5.5 mA
20 ms
RA, RB, MS, FMS
Input High Voltage
Input Low Voltage
VIH VDD-1
V
VIL
VSS+1
V
Digital Outputs
LED Output Frequency in
FAST Mode
FMAX
4.5
5
5.5
kHz
161ARMS input current per
channel
LED, PH1, PH2, PH3
Output High Voltage
Output Low Voltage
VOH
VOL
VDD-1
VSS+1
V ISOURCE = 5mA
V ISINK = 5mA
MOP, MON, PH/DIR
Output High Voltage
Output Low Voltage
VOH
VOL
VDD-1
VSS+1
V ISOURCE = 10mA
V ISINK = 10mA
* This is the actual pull-up/down current during pin state scanning which is active for 701s every 20ms. The average pull-
up/down current is therefore between 51A and 201A.
During manufacturing, testing and shipment we take great care to protect our products against potential external
environmental damage such as Electrostatic Discharge (ESD). Although our products have ESD protection circuitry,
permanent damage may occur on products subjected to high-energy electrostatic discharges accumulated on the
human body and/or test equipment that can discharge without detection. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality during product handling.
SPEC-1538 (REV. 6)
2/23
ATTENTION:
Electrostatic
sensitive device.
Requires special
handling.
21-02-2013


Part Number SA4301A
Description Polyphase Energy Metering IC
Maker sames
Total Page 23 Pages
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