SA4102A South African Micro-Electronic Systems, SA4102A Datasheet

SA4102A

Manufacturer Part Number

SA4102A

Description

Single Phase KWH Metering ic With Pulse Output

Manufacturer

South African Micro-Electronic Systems

Datasheet

1.SA4102A.pdf (18 pages)

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Single Channel Single Phase Energy

Metering IC

FEATURES

SPEC-1199 (REV. 1)

DESCRIPTION

The SA4102, SA4104 and SA4105 are members of a single

channel energy metering family. The SA4102 is 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

The SAMES SA4102* 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 SA4102 does not require an

external crystal. A precision oscillator, which supplies the

circuitry with a stable frequency, is integrated on chip.

The SA4102 metering integrated circuit generates a pulse rate

* Patents: PCT/IB03/02915; ZA2002/5873; ZA97/2075; IN1920/DEL/96; ZA94/0273; ZA93/1579; US5,396,447; EP0055949

SA4102

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

filtered instantaneous or average Real Power information

AGND

IVP

IIN

IIP

VOLTAGE REFERENCE

CURRENT BIASING

VREF

ADC

AND

POWER ON

RESET

VDD

OUTPUT

DIGITAL

VSS

Figure 1: Block diagram

LPFS

Instantaneous

OSCILLATOR

power

PROCESSING BLOCK

TIMING

1/18

AND

SIGNAL

LOW PASS

DIRI

FILTER

output, the frequency of which is proportional to the power

consumption.

Programmable inputs allow the meter manufacturer to

configure the SA4102 for different meter maximum currents

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

filtered instantaneous (filter mode 1) or average (filter mode 2)

power consumption and can be used for calibration or to

interface with a micro-controller.

The SA4102 includes an anti-creep feature preventing any

creep effects in the meter under no load conditions.

The SA4102 integrated circuit is available in 20 pin dual-inline

plastic (PDIP20) and small outline (SOIC20) 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

power

DIRO

MON

COUNTER DRIVER

BUFFERS

DIVISION

DRIVING

MOTOR

CALIBRATION

LED OUTPUT

FOR

DETECTION

PIN STATE

DIVISION

FOR

PRELIMINARY

FMS

MOP

NOM

) without having to change

sames

LED

15-10-03

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