SA9109B Ver la hoja de datos (PDF) - South African Micro Electronic Systems

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SA9109B

MONOCHIP SINGLE PHASE BIDIRECTIONAL KILOWATT HOUR METERING IC

South African Micro Electronic Systems 

SA9109B

DESCRIPTION (continued)

The measured energy is displayed in kiloWatt hours (kWh). The SA9109B is capable

of driving a display having a resolution of 1/10 kWh.

This innovative universal energy metering integrated circuit is ideally suited for energy

measurement in single phase systems.

The SA9109B integrated circuit is available in a 44 pin plastic leaded chip carrier (PLCC-

44) package type.

BLOCK DIAGRAM

V BA

S D0

R[0] R[1] R[2] R[3] V DD V S S

C IN

SERIAL

S [0]

C IP

O UT

S [1]

C ON

I NT ERF ACE

S [2]

C OP

S [3]

S [4]

IV N

T ARI F F

REGISTERS

S [5]

GND

ANAL O G

SIGNAL

L CD

S [6]

S [7]

PRO-

IIP

CESSING

CONTROL

S [8]

IIN

S [9]

INT EG RAT .

S [10]

&

CPOP

PULSE

S [11]

CPON

RATE

S [12]

C P IN

G ENERATION

S [13]

C OFF

V RE F

REF

TIMING & CONTROL

OSCI

O SC

OSC2

D R-0 1253

P GM P B P DTA P CLK S R[0] S R[1]

2/18

sames

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