SA2007M
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.
RMS
19
IVP
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
1, 2,
3, 4
IIN1, IIP1
IIN2, IIP2
channel is converted to a current of 16µA at rated conditions. The current sense input
RMS
saturates at an 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
Motor pulse rate select inputs. Described under Input Signals.
6, 7
MP0, MP1
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.
13
15
16
LED
RATED
SEL1
Rated condition select input. Described under Input Signals.
Current channel select output. This output indicates which channel is been used for kWh
metering.
17
ELT
Earth loop tamper output. This output indicates an earth loop tamper condition.
Direction output. This output indicates the energy flow direction.
DIRO
18
NC
No Connection.
11
10
Test input. Connect to V for normal operation.
SS
TCLK
ORDERING INFORMATION
IIN1
IIP1
1
20 GND
Part Number
SA2007MPA
SA2007MSA
Package
DIP-20
IVP
2
19
IIN2
IIP2
3
18 DIRO
SOIC-20
ELT
17
4
VREF
MP1
MP0
VDD
SEL1
5
16
15
14
13
12
11
RATED
6
VSS
LED
MOP
NC
7
8
MON
TCLK
9
10
DR-01595
Figure 2: Pin connections: Package: DIP-20, SOIC-20
3/10
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