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sames

sames

SA2002H

http://www.sames.co.za

PIN DESCRIPTION

8

Pin

14

Pin

16

Pin

20

Pin

Designation

Description

8

14

16

20

GND

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

between V

and V .

DD

SS

4

5

5

8

V

DD

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.

6

10

9

14

V

SS

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.

7

13

15

19

IVP

Analog Input for Voltage. The current into the A/D converter

should be set at 14µA

at nominal mains voltage. The

RMS

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

1, 2

1, 2

1, 2

1, 2

IIN, IIP

Inputs for current sensor. The shunt resistor voltage from each

channel is converted to a current of 16µA

at rated conditions.

RMS

The current sense input saturates at an input current of ±25µA

peak.

3

3

3

3

VREF

This pin provides the connection for the reference current setting

resistor. A 24kW resistor connected to V set the optimum

SS

operating condition.

5

8

6

12

FOUT

Pulse rate output. Refer to pulse output format for a description

of the pulse rate.

4

4

4

6

8

5

7

10

6

12

12

7

9

14

10

11

16

17

18

TP1

TP2

TP3

TP4

TP5

TP6

TP7

TP8

TP9

TP10

Leave pins unconnected.

13

N.A.

9

7

13

DIR

Direction output. The direction of the energy flow is indicated on

this output.

N.A.

11

11

15

FMO

Voltage sense zero crossover. The FMO output generates pulses

on energy rising edge of the mains voltage.