SA9110AFA Ver la hoja de datos (PDF) - South African Micro Electronic Systems

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SA9110AFA

MONOCHIP THREE PHASE BIDIRECTIONAL KILOWATT HOUR METERING IC

South African Micro Electronic Systems 

SA9110A

ELECTRICAL CHARACTERISTICS

(Over the temperature range -10°C to +70°C#, unless otherwise specified.)

Parameter

Symbol Min Typ Max Unit Condition

Supply Voltage

Supply Current

Nonlinearity of

V -V 4.5

DD SS

IDD

5.5 V

15 mA

power calculation

-0.3

+0.3 % 1% - 100% of

rated power

Current Sensor Inputs (Differential)

Input Current Range

III

-25

Voltage Sensor Inputs (Asymmetric)

+25 µA Peak value

Input current Range

IIV

-25

+25 µA Peak value

LCD backplane Voltage

V

B

VDD &

VSS

V R[0] .. R[3]

LCD segment Voltage

V

S

1/3 VDD

2/3VDD

V S[0] .. S[15]

Pin SDO

Pulse rate

f

3.5

Hz Default1

P

80 Hz Programmed1

Output Voltage Low

Output Voltage High

Oscillator

V

V +1 V

OL

SS

VOH

VDD-1

V

Recommended crystal:

I = 5mA

OL

IOH = -2mA

TV colour burst crystal f = 3.5795 MHz

Pin VREF

Ref. Current

Ref. Voltage

Pins PB, SR[0], SR[1],

With R7 = 24kΩ

-IR

45 50 55 µA connected to VSS

VR

1.1

1.3 V Referred to VSS

PGM

Input Voltage High

Input Voltage Low

Pullup Current

Pin PCLK

VIH

4

V

V

1V

IL

30

µA V = V

IN

SS

Input Voltage High

Input Voltage Low

Input Current High/

Low

VIH

4

V

VIL

1V

±30

µA VIN=VSS..VDD

Pin VBA

IMAX

V

1.1

MIN

50 nA Power down

V mode

# Extended Operating Temperature Range available on request

Note 1: At rated conditions

sames

3/18

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