SA4120A
PIN DESCRIPTION
Designation 8 Pin 16 Pin 20 Pin Description
Analog Ground. This is the reference pin for the current and voltage signal sensing
networks. The supply voltage to this pin should be mid-way between VDD and VSS
AGND
VDD
8
4
6
16
5
20
8
.
Positive Supply Voltage. The voltage to this pin should be +2.5V ± 10% with respect
to AGND.
Negative Supply Voltage. The voltage to this pin should be -2.5V ± 10% with
respect to AGND.
VSS
9
14
Analog Input for Voltage. The maximum current into the voltage sense input IVP
should not exceed 16µARMS. At nominal voltage an input current of 14μARMS is
recommended. The voltage sense input saturates at an input current of ±25µA
peak.
IVP
7
15
19
Analog Inputs for Current. The maximum current into the current sense inputs
IIP/IIN should be set at 16µARMS. The current sense inputs saturate at an input
current of ±25µA peak.
IIP, IIN
VREF
2, 1
3
2, 1
3
2, 1
3
This pin provides the connection for the reference current setting resistor. A 47k
resistor connected to VSS sets the optimum operating conditions.
DIR
7
6
13
12
Direction Indicator output. This output indicates the direction of energy flow.
Pulse output. Refer to the Pulse Output section for information on the pulse output.
FOUT
5
Mains Voltage Crossover output. This output indicates the polarity of the mains
voltage.
FMO
11
15
4, 8,
10,
12-14
4-7,
9-11,
16-18
NC
No connection, leave unconnected.
1
IIN
IIP
8
AGND
IVP
1
2
20
19
18
17
16
15
14
13
12
11
IIN
IIP
AGND
IVP
2
3
4
7
6
5
VREF
VDD
VSS
3
VREF
NC
NC
FOUT
4
NC
5
Figure 3: Pin connections for PDIP8 package
NC
NC
6
NC
FMO
VSS
DIR
1
2
3
4
5
6
7
8
IIN
IIP
16
15
14
13
12
11
10
9
AGND
IVP
7
NC
8
VDD
NC
VREF
NC
NC
9
FOUT
NC
NC
10
NC
VDD
FOUT
DIR
NC
Figure 5: Pin connections for SOIC20 package
FMO
NC
ORDERING INFORMATION
Part Number
Package
NC
VSS
SA4120APAR-8
SA4120ASAR-16
SA4120ASAR-20
PDIP8 (RoHS compliant)
SOIC16 (RoHS compliant)
SOIC20 (RoHS compliant)
Figure 4: Pin connections for SOIC16 package
SPEC-3094 (REV. 2)
29-09-2017
4/14
SAMES [ SAMES ]
