3/10

sames

SA2002D

http://www.sames.co.za

Part Number

SA2002DPA

SA2002DSA

Package

PDIP20

SOIC20

ORDERING INFORMATION

PIN DESCRIPTION

Analog Ground. The supply voltage to this pin should be mid-way between V

and V .

DD

SS

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.

Description

PIN

20

8

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.

14

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

at

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

RMS

19

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

current of 16µA

at rated conditions. The current sense input saturates at an input current

of ±25µA peak.

RMS

1, 2

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

resistor

connected to V

sets the optimum operating condition.

W

SS

3

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

including the LED frequency calibration pulse.

6, 5, 4

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

connected to V .

DD

7

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

SS

9

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

12, 15

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

options.

13

Direction output. This output indicates the energy flow direction.

17

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

energy measurement.

18

10,11,16

AGND

V

DD

Designation

V

SS

IVP

IIN, IIP

VREF

R0, R1, R2

FAST

CNF

MON, MOP

LED

DIRO

DIRI

NC

DR-01567

1

IIN

AGND

IIP

IVP

MON

DIRI

VSS

VREF

R2

R1

R0

FAST

SA2002D

VDD

DIRO

NC

LED

MOP

CNF

NC

NC

2

3

4

5

615

14

13

12

11

10

9

8

7

16

17

18

19

20

Figure 2: Pin connections: Package: PDIP20, SOIC20

No Connection