SA2002D Datasheet, PDF(3/10 Page) Sames – Single Phase Kilowatt-hour Metering IC for Mechanical Display Applications

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SA2002D Datasheet, PDF (3/10 Pages) Sames – Single Phase Kilowatt-hour Metering IC for Mechanical Display Applications

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SA2002D

PIN DESCRIPTION

Designation

AGND

VDD

VSS

IVP

1, 2

IIN, IIP

VREF

6, 5, 4

R0, R1, R2

FAST

12, 15

CNF

MON, MOP

LED

10,11,16

DIRO

DIRI

sames

Description

Analog Ground. The supply voltage to this pin should be mid-way between VDD and VSS.

Positive supply voltage. The voltage to this pin is typically +2.5V if a shunt resistor is used for

current sensing or in the case of a current transformer a +5V supply can be applied.

Negative supply voltage. The voltage to this pin is typically -2.5V if a shunt resistor is used for

current sensing or in the case of a current transformer a 0V supply can be applied.

Analog Input for Voltage. The current into the A/D converter should be set at 14ÂµARMS at

nominal mains voltage. The voltage sense input saturates at an input current of Â±25ÂµA peak.

Inputs for current sensor. The shunt resistor voltage from each channel is converted to a

current of 16ÂµARMS at rated conditions. The current sense input saturates at an input current

of Â±25ÂµA peak.

This pin provides the connection for the reference current setting resistor. A 24kW resistor

connected to VSS sets the optimum operating condition.

Rated Condition Select. These inputs are used for the different rated condition configuration,

including the LED frequency calibration pulse.

FAST calibration. The LED pulse rate change to 1252Hz at rated conditions if FAST is

connected to VDD.

Configure / Test input. For normal operation this pin must be connected to VSS.

Motor pulse outputs. These outputs can drive an electromechanical counter directly.

Calibration LED output. Refer to the rated condition select section of the pulse rate output

options.

Direction output. This output indicates the energy flow direction.

Direction input. This input is used to enable either bi-directional or unidirectional

energy measurement.

No Connection

IIN 1

IIP 2

VREF 3

R2 4

R1 5

R0 6

FAST 7

VDD 8

CNF 9

NC 10

SA2002D

20 AGND

19 IVP

18 DIRI

17 DIRO

16 NC

15 MON

14 VSS

13 LED

12 MOP

11 NC

DR-01567

Figure 2: Pin connections: Package: PDIP20, SOIC20

ORDERING INFORMATION

Part Number

SA2002DPA

SA2002DSA

Package

PDIP20

SOIC20

http://www.sames.co.za

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