SA2005P
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
8
SCL
Serial clock output. This output is used to strobe data from the external EEPROM.
SDA
9
Serial data. Send and receive data from an external EEPROM.
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.
Triggers a data reload from the external EEPROM.
7
RLOAD
14, 15, PH1, PH2,
Multiplexed LED drivers for direction and mains fail indication.
16
PH3
ORDERING INFORMATION
IIP2
1
24 IVN2
Part Number
SA2005PPA
SA2005PSA
Package
DIP-24
IIN2
IIN1
2
23
IVN3
IIP3
3
22 IIP1
SOIC-24
IVN1
21
4
IIN3
VDD
GND
5
20
19
18
17
16
15
14
13
VREF
6
RLOAD
VSS
7
SCL
TEST
8
PH3
SDA
9
LED
PH2
10
11
12
MON
MOP
PH1
PH / DIR
dr-01602
Figure 2: Pin connections: Package: DIP-24, SOIC-24
3/16
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