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SA9604A

THREE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH SERIAL SPI INTERFACE

South African Micro Electronic Systems 

SA9604A

ELECTRICAL CHARACTERISTICS

(VDD = 2.5V, VSS = -2.5V, over the temperature range -10°C to +70°C#, unless otherwise

specified.)

Parameter

Symbol Min Typ Max Unit Condition

Operating temp. range

T

-25

O

+85 °C

Supply Voltage: Positive VDD 2.25

2.75 V

Supply Voltage: Negative VSS -2.75

-2.25 V

Supply Current: Positive I

DD

8 10 mA

Supply Current: Negative I

SS

8 10 mA

Current Sensor Inputs (Differential)

Input Current Range

III

-25

Voltage Sensor Input (Asymetrical)

+25 µA Peak value

Input Current Range

Pin DO

Low Voltage

High Voltage

Pin DI

High Voltage

Low Voltage

I

IV

V

OL

VOH

VIH

V

IL

-25

VDD-1

VDD-1

+25 µA Peak value

V +1 V

SS

V

V

V +1 V

SS

I = 5mA

OL

IOH = -2mA

V =V

IN

SS

Pin SCK

High Voltage

Low Voltage

V V -1

IH

DD

V

IL

V

V +1 V

SS

V =V

IN

SS

f

SCK

tLO

0.6

t

0.6

HI

800 kHz

µs

µs

Pin CS

High Voltage

Low Voltage

Pin F150

Low Voltage

High Voltage

VIH

VDD-1

VIL

V

OL

V

OH

V -1

DD

V

VSS+1 V

VIN = VSS

V +1 V I = 5mA

SS

OL

V I = -2mA

OH

Oscillator

Recommended crystal:

TV colour burst crystal f = 3.5795 MHz

Pin VREF

Ref. Current

Ref. Voltage

With R = 47kΩ

-IR 22.5 25 27.5 µA connected to VSS

VR

1.1

1.3

V Reference to VSS

# Extended Operating Temperature Range available on request.

sames

3/20

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