SA2007P
ssaammeess
PIN DESCRIPTION
Designation
PIN
Description
Analog Ground. The voltage to this pin should be mid-way between V and V .
SS
20
GND
DD
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.
V
DD
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.
V
SS
14
The current into the A/D converter should be set at 14µA at nominal mains voltage. The voltage
RMS
19
IVP
sense input saturates at an input current of ±25µA peak.
Inputs for current sensor - channel 1 and channel 2. The shunt resistor voltage from each channel
1, 2,
3, 4
IIN1, IIP1
IIN2, IIP2
is converted to a current of 16µA at rated conditions. The current sense input saturates at an
RMS
input current of ±25µA peak.
This pin provides the connection for the reference current setting resistor. A 24kW resistor
5
VREF
connected to V sets the optimum operating condition.
SS
Serial clock output. This output is used to strobe data from the external EEPROM.
6
7
SCL
SDA
Serial data. Send and receive data from an external EEPROM.
9, 12
MON, MOP
Motor pulse outputs. These outputs can be used to drive an impulse counter or stepper motor directly.
Calibration LED output. Refer to section Led Output (LED) for the pulse rate output options.
Configuration reload input. A falling edge will trigger a register reload from the external EEPROM.
Current channel select output. This output indicates which channel is been used for kWh metering.
13
LED
15
RLOAD
16
SEL1
17
18
ELT
Earth loop tamper output. This output indicates an earth loop tamper condition.
DIRO
Direction output. This output indicates the energy flow direction
10, 11
Test input. Connect to V for normal operation.
SS
TEST, TCLK
ORDERING INFORMATION
IIN1
IIP1
1
2
20 GND
Part Number
SA2007PPA
SA2007PSA
Package
DIP-20
IVP
19
IIN2
IIP2
3
18 DIRO
SOIC-20
ELT
17
4
VREF
SCL
SEL1
5
16
15
14
13
12
11
RLOAD
6
SDA
VDD
VSS
LED
7
8
MOP
TCLK
MON
TEST
9
10
DR-01595
Figure 2: Pin connections: Package: DIP-20, SOIC-20
3/12
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