SA9103CSA Ver la hoja de datos (PDF) - South African Micro Electronic Systems

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SA9103CSA

SINGLE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH SERIAL INTERFACE

South African Micro Electronic Systems 

SA9103C

PIN DESCRIPTION

Pin

Designation

20

GND

8

VDD

14

VSS

19

IVP

1

IIN

2

IIP

11

OSC1

10

OSC2

12

SOUT

13

SIN

4

CPON

5

CPOP

6

CPIN

7

CPIP

15

CIP

16

CIN

17

COP

18

CON

3

VREF

9

TP9

Description

Ground

Positive Supply Voltage

Negative Supply Voltage

Analog input for Voltage

Inputs for current sensor

Connections for crystal or ceramic resonator

(OSC1 = Input ; OSC2 = Output)

Serial Interface Out

Serial Interface In

Connections for outer loop capacitors of

A/D converter (Voltage)

Connections for inner loop capacitors of

A/D converter (Voltage)

Connections for inner loop capacitors of

A/D converter (Current)

Connections for outer loop capacitors of

A/D converter (Current)

Connection for current setting resistor

Test Pin. Must be connected to V

SS

FUNCTIONAL DESCRIPTION

The SA9103C 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 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 SA9103C integrates the measured

active and reactive power consumption into 22 bit integrators, which are accessable via

a serial port having a RS232 protocol. Two additional on-chip registers exist: one register

contains the mains frequency information; and the other the voltage information.

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