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sames

sames

SA2007H

http://www.sames.co.za

Figure 2: Pin connections: Package: DIP-20, SOIC-20

Part Number

SA2007HPA

SA2007HSA

Package

DIP-20

SOIC-20

ORDERING INFORMATION

PIN DESCRIPTION

Analog Ground. The 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

RMS

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

19

Inputs for current sensor - Channel 1 and Channel 2. The shunt resistor voltage from each

channel is converted to a current of 16µA

at rated conditions. The current sense input

RMS

saturates at an input current of ±25µA peak.

1, 2,

3, 4

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

connected to V

sets the optimum operating condition.

SS

5

This logic input is used to select between latched or unlatched condition for the pulse and

direction outputs.

6

A logic input is used to reset the latched outputs which is required after an interrupt has

occurred.

7

The zero crossover of the voltage sense input is signaled on this pin.

9

Configure / Test inputs. For normal operations these pins must be connected to V .

SS

10, 15

This logic output will indicate a change in status of the pulse or direction outputs.

12

Pulse outputs. The P1 and P2 outputs give instantaneous pulse outputs of channel 1 and

channel 2 respectively. The pulse is active low with a pulse width of 71.5µs for positive energy

and doubles for reverse energy.

17, 13

Direction output. These outputs indicate the energy flow direction of each channel.

18, 16

No Connection.

11

DR-01620

1

IIN1

AGND

D2

IIP1

IVP

TEST

IIN2

D1

VSS

IIP2

VREF

OMODE

RP

VDD

P1

P2

INT

NC

TCLK

FMO

2

3

4

5

6

15

14

13

12

11

10

9

8

7

16

17

18

19

20

AGND

V

DD

Designation

V

SS

IVP

IIN1, IIP1

IIN2, IIP2

VREF

OMODE

RP

FMO

TCLK, TEST

INT

P1, P2

D1, D2

NC

PRELIMINARY