SA4104A South African Micro-Electronic Systems, SA4104A Datasheet

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SA4104A

Manufacturer Part Number
SA4104A
Description
Single Phase KWH Metering ic With Pulse Output
Manufacturer
South African Micro-Electronic Systems
Datasheet

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Single Channel Single Phase Energy
Metering IC
FEATURES
SPEC-1218 (REV. 1)
DESCRIPTION
The SA4104 is part of a single channel energy metering family
consisting of the SA4102, SA4104 and SA4105, the SA4102
being the principle device with unique features and options.
The SA4102 offers user selectable bi-directional or uni-
directional energy measurement whereas the SA4104 and
SA4105 devices provide only for bi-directional energy
measurement. The SA4102 affords the user the option of
selecting one of two methods of filtering the LED output
whereas the SA4104 and SA4105 are each supplied with one
of the two filter types. Refer to the SA4102 datasheet for a
description of both filter types.
The SAMES SA4104* is an accurate single-phase
power/energy metering integrated circuit providing a single
chip solution for energy meters. Very few external components
are required and the chip has direct drive capability for electro-
mechanical counters. The SA4104 does not require an
external crystal. A precision oscillator, which supplies the
circuitry with a stable frequency, is integrated on chip.
* Patents: PCT/IB03/02915; ZA2002/5873; ZA97/2075; IN1920/DEL/96; ZA94/0273; ZA93/1579; US5,396,447; EP0055949
SA4104
Meets the IEC62053, CBIP-88 and IS137799-1999
Specification requirements for Class 1 AC static watt-hour
meters for active energy
The motor drive outputs (MOP, MON) provide the average
Real Power information and can drive an electro-
mechanical counter or an impulse counter directly
LED pulse output for calibration purposes and can supply
average Real Power information
AGND
AGND
IVP
IVP
IIN
IIN
IIP
IIP
VOLTAGE REFERENCE
VOLTAGE REFERENCE
CURRENT BIASING
CURRENT BIASING
VREF
VREF
ADC
ADC
ADC
ADC
AND
AND
POWER ON
POWER ON
RESET
RESET
VDD
VDD
OUTPUT
OUTPUT
OUTPUT
OUTPUT
DIGITAL
DIGITAL
DIGITAL
DIGITAL
VSS
VSS
Figure 1: Block diagram
Instantaneous
Instantaneous
OSCILLATOR
OSCILLATOR
power
power
PROCESSING BLOCK
PROCESSING BLOCK
TIMING
TIMING
1/18
AND
AND
SIGNAL
SIGNAL
LOW PASS
LOW PASS
DIRO
DIRO
FILTER
FILTER
The SA4104 metering integrated circuit generates a pulse rate
output, the frequency of which is proportional to the power
consumption.
Programmable inputs allow the meter manufacturer to
configure the SA4104 for different meter maximum currents
(I
the stepper motor or impulse counter gear ratio. The LED pulse
output follows the average power consumption measured and
is intended for meter calibration purposes. In FAST mode this
output provides a high frequency pulse rate following the
average power consumption and can be used for calibration or
to interface with a micro-controller.
The SA4104 includes an anti-creep feature preventing any
creep effects in the meter under no load conditions.
The SA4104 integrated circuit is available in 16 pin dual-inline
plastic (PDIP16) and small outline (SOIC16) package types.
MAX
Configurable for different meter ratings
Precision on-chip oscillator (70ppm/°C drift)
Precision on-chip voltage reference (10ppm/°C drift)
On-chip anti-creep function (0.01% of Fmax)
Low power consumption (<30mW typical)
Measures AC inputs only
) and nominal voltages (V
Average
Average
power
power
MON
MON
COUNTER DRIVER
COUNTER DRIVER
BUFFERS
BUFFERS
DIVISION
DIVISION
DRIVING
DRIVING
MOTOR
MOTOR
CALIBRATION
CALIBRATION
LED OUTPUT
LED OUTPUT
FOR
FOR
DETECTION
DETECTION
PIN STATE
PIN STATE
DIVISION
DIVISION
FOR
FOR
PRELIMINARY
FMS
FMS
MOP
MOP
NOM
) without having to change
sames
sames
LED
LED
R0
R0
R1
R1
R2
R2
R3
R3
15-10-03

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