SA2005M
ssaammeess
PIN DESCRIPTION
Designation
PIN
Description
Analog Ground. The voltage to this pin should be mid-way between V and V .
SS
20
6
GND
DD
V
DD
Positive supply voltage. Typically +5V if a current transformer is used for current sensing.
V
SS
Negative supply voltage. Typically 0V if a current transformer is used for current sensing.
18
Voltage sense inputs. The current into the A/D converter should be set at 14µA at nominal mains
RMS
21, 24, IVN1, IVN2,
voltage. The voltage sense input saturates at an input current of ±25µA peak.
3
IVN3
Inputs for current sensors. The termination resistor voltage from each current transformer is
23, 22,
2, 1,
IIN1, IIP1,
IIN2, IIP2,
IIN3, IIP3
converted to a current of 16µA at rated conditions. The current sense input saturates at an input
RMS
current of ±25µA peak.
5, 4
19
This pin provides the connection for the reference current setting resistor. A 24kW resistor
VREF
connected to V sets the optimum operating condition.
SS
Test input. For normal operation connect this pin to V .
SS
17
TEST
Calibration LED output. Refer to section LED Output (LED) for the pulse rate output options.
LED
10
Motor pulse outputs. These outputs can be used to drive an impulse counter or stepper motor directly.
11, 12 MON, MOP
PH / DIR
13
Multiplexed Phase or direction driver output.
14, 15, PH1, PH2,
Multiplexed LED drivers for direction and mains fail indication.
16
7
8
PH3
RA
Rated conditions select input.
The RE input selects the calibration LED resolution as well as the summing mode for the
programmable adder.
RE
The IM inputs selects the counter resolution (Motor drive output).
9
IM
ORDERING INFORMATION
IIP2
1
24 IVN2
Part Number
SA2005MPA
SA2005MSA
Package
DIP-24
IIN2
IIN1
2
23
IVN3
IIP3
3
22 IIP1
SOIC-24
IVN1
21
4
IIN3
VDD
RA
GND
5
20
19
18
17
16
15
14
13
VREF
6
VSS
7
RE
TEST
8
PH3
IM
9
PH2
LED
10
11
12
MON
MOP
PH1
PH / DIR
dr-01617
Figure 2: Pin connections: Package: DIP-24, SOIC-24
3/12
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