SA2007M
PIN DESCRIPTION
PIN
20
8
Designation
GND
V
DD
Description
sames
Analog Ground. The voltage to this pin should be mid-way between V
DD
and V
SS
.
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.
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.
The current into the A/D converter should be set at 14µA
RMS
at nominal mains voltage.
The voltage 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 is converted to a current of 16µA
RMS
at rated conditions. 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 V
SS
sets the optimum operating condition.
Motor pulse rate select inputs. Described under Input Signals.
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.
Rated condition select input. Described under Input Signals.
Current channel select output. This output indicates which channel is been used for kWh
metering.
Earth loop tamper output. This output indicates an earth loop tamper condition.
Direction output. This output indicates the energy flow direction.
No Connection.
Test input. Connect to V
SS
for normal operation.
14
19
V
SS
IVP
1, 2,
3, 4
IIN1, IIP1
IIN2, IIP2
5
6, 7
9, 12
13
15
16
17
18
11
10
VREF
MP0, MP1
MON, MOP
LED
RATED
SEL1
ELT
DIRO
NC
TCLK
ORDERING INFORMATION
IIN1
IIP1
IIN2
IIP2
VREF
MP1
MP0
VDD
MON
TCLK
1
2
3
4
5
6
7
8
9
10
20
19
GND
IVP
Part Number
SA2007MPA
SA2007MSA
Package
DIP-20
SOIC-20
18 DIRO
17 ELT
16
15
SEL1
RATED
14 VSS
13
12
11
LED
MOP
NC
DR-01595
Figure 2: Pin connections: Package: DIP-20, SOIC-20
3/10
PRELIMINARY
SAMES [ SAMES ]
