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SA9102F

SINGLE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT

South African Micro Electronic Systems 

SA9102F/SA9102H

PIN DESCRIPTION

Pin

Designation

20

GND

8

VDD

14

VSS

19

IVP

1

IIN

2

IIP

11

OSC1

10

OSC2

12

FOUT

13

DIR

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)

Pulse rate output

Direction indication output

Connections for outer loop capacitor of

A/D converter (Voltage)

Connections for inner loop capacitor of

A/D converter (Voltage)

Connections for inner loop capacitor of

A/D converter (Current)

Connections for outer loop capacitor of

A/D converter (Current)

Connection for current setting resistor

Test Pin. Connect to V

SS

FUNCTIONAL DESCRIPTION

The SA9102F/SA9102H are CMOS mixed signal Analog/Digital integrated circuits, which

perform bidirectional power/energy calculations across a power range of 1000:1, to an

overall accurancy of better than Class 1.

These integrated circuits includes all the required functions 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.

These devices generate pulses, the frequency of which is proportional to the power

consumption. The pulse rate follows the instataneous power measured. Direction

information is also provided.

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