SA2002H
sames
PIN DESCRIPTION
8
Pin
14
Pin
16
Pin
20
Pin
Designation
Description
Analog Ground. The voltage to this pin should be mid-way
between VDD and VSS.
8
4
14
5
16
5
20
8
GND
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.
VDD
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.
6
7
10
13
1, 2
3
14
19
1, 2
3
9
15
1, 2
3
VSS
IVP
Analog Input for Voltage. The current into the A/D converter
should be set at 14µARM at nominal mains voltage. The
voltage sense input saturates at an input current of 25µA peak.
S
Inputs for current sensor. The shunt resistor voltage from each
channel is converted to a current of 16µARM at rated conditions.
S
1, 2
3
IIN, IIP
VREF
The current sense input saturates at an input current of 25µA
peak.
This pin provides the connection for the reference current setting
resistor. A 24kW resistor connected to VSS set the optimum
operating condition.
Pulse rate output. Refer to pulse output format for a description
of the pulse rate.
5
8
9
6
7
12
13
15
FOUT
DIR
Direction output. The direction of the energy flow is indicated on
this output.
N.A.
N.A.
Voltage sense zero crossover. The FMO output generates pulses
on energy rising edge of the mains voltage.
11
11
FMO
Leave pins unconnected.
4
6
4
4
5
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
TP9
TP10
8
7
10
12
13
14
6
12
7
9
10
11
16
17
18
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