SAMES SA2007HPA, SA2007HSA Datasheet
Single Phase Bidirectional Dual Element
Power/Energy Metering IC with Pulse Output
SA2007H
FEATURES
+ Two current sensor inputs
+ Dual pulse and energy direction outputs
+ No external crystal or resonator required
+ Performs bi-directional power and energy measurement
+ Meets the IEC 521/1036 Specification for Class 1 AC Watt
hour meters
DESCRIPTION
The SAMES SA2007H is a single phase bidirectional dual
element energy metering integrated circuit. It provides a
simple analog interface to a micro-controller and is specifically
designed for meter manufacturers to have full control over the
meter functionality.
The SA2007H has two current sensor inputs. The power
consumption on both inputs are continuously measured. A
typical application would be to monitor Live and Neutral lines
for tamper detection.
samessames
+ Protected against ESD
+ Total power consumption rating below 25mW
+ Adaptable to different types of sensors
+ Operates over a wide temperature range
+ Precision voltage reference on-chip
For each current sensor input the SA2007H integrated circuit
has a corresponding pulse output, each generating a pulse
rate with a frequency proportional to the power consumption
measured on the specific channel.
The SA2007H performs active power measurement and takes
the power factor into account. Energy consumption can be
determined by the power measurement being integrated over
time. The energy flow direction information is also available for
each channel.
IIP1
IIN1
IVP
AGND
IIP2
IIN2
CURRENT
CHANNEL 1
VOLTAGE
CURRENT
CHANNEL 2
V
DD
SS
POWER 1
X
POWER 2
X
VOLTAGE
REF.
Figure 1: Block diagram
OSC
dr-01623
POWER TO
PULSE RATE
OUTPUT
CONTROL
POWER TO
PULSE RATE
TIMING
TESTTCLKVREFV
P1
D1
OMODE
RP
INT
P2
D2
FMO
SPEC-0116 (REV. 1)
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PRELIMINARY
15-01-01
SA2007H
samessames
ELECTRICAL CHARACTERISTICS
(V = 2.5V, V = -2.5V, over the temperature range -10°C to +70°C , unless otherwise specified.)
DD SS
Parameter
Operating temp. Range
Supply Voltage: Positive
Supply Voltage: Negative
Supply Current: Positive
Supply Current: Negative
Symbol
T
O
V
DD
V
SS
I
DD
I
SS
Min
-25
2.25
-2.75 -2.25
#
Typ
Max
+85
2.75
5
5
6
6
Current Sensor Inputs (Differential)
Input Current Range
I
II
-25
+25
Voltage Sensor Input (Asymmetrical)
Input Current Range
Pin VREF
Ref. Current
Ref. Voltage
I
IV
-I
R
V
R
-25
45
1.1
50
+25
55
1.3
Digital I/O
Pins P1, P2, D1, D2, FMO, INT
Output High Voltage
Output Low Voltage
Pins TCLK, TEST, OMODE, RP
Input High Voltage
Input Low Voltage
Pulse Rate P1, P2
Pulse Width P1, P2
V
OH
V
OL
V
IH
V
IL
f
p
t
pp
t
pn
V-1
DD
V-1
DD
5
0
1360
71.55
143.1
V+1
SS
V+1
SS
1600
3000
Unit
°C
V
V
mA
mA
µA
µA
µA
V
V
V
V
V
Hz
Hz
Hz
µs
µs
Condition
Peak value
Peak value
With R = 24kW
connected to V
Reference to V
I = -2mA
OH
I = 5mA
OL
SS
SS
At rated input conditions
Specified linearity
Min and Max frequency
Positive energy flow
Negative energy
Pins TCLK, TEST, RP, OMODE
Pull down current
I
IL
48 110
µA
VV
1 = DD
#Extended Operating Temperature Range available on request.
ABSOLUTE MAXIMUM RATINGS*
Parameter Symbol Min Max Unit
Supply Voltage V -V -0.3 6.0 V
Current on any pin I -150 +150 mA
Storage Temperature T -40 +125 °C
Operating Temperature T -25 +85 °C
*Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress
rating only. Functional operation of the device at these or any other condition above those indicated in the operational sections of
this specification, is not implied. Exposure to Absolute Maximum Ratings for extended periods may affect device reliability.
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DD SS
PIN
STG
O
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PRELIMINARY
SA2007H
PIN DESCRIPTION
PIN
Designation
samessames
Description
20
8
14
19
1, 2,
3, 4
5
6
7
9
10, 15
12
AGND
V
DD
V
SS
IVP
IIN1, IIP1
IIN2, IIP2
VREF
OMODE
RP
FMO
TCLK, TEST
INT
Analog Ground. The voltage to this pin should be mid-way between V and V .
DD 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.
Analog Input for Voltage. The current into the A/D converter should be set at 14µA at
RMS
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 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
connected to V sets the optimum operating condition.
SS
This logic input is used to select between latched or unlatched condition for the pulse and
direction outputs.
A logic input is used to reset the latched outputs which is required after an interrupt has
occurred.
The zero crossover of the voltage sense input is signaled on this pin.
Configure / Test inputs. For normal operations these pins must be connected to V .
SS
This logic output will indicate a change in status of the pulse or direction outputs.
17, 13
P1, P2
Pulse outputs. The P1 and P2 outputs give instantaneous pulse outputs of channel 1 and
channel 2 respectively. The pulse is active low with a pulse width of 71.5µs for positive energy
and doubles for reverse energy.
18, 16
11
D1, D2
NC
1IIN1 AGND
IIP1 IVP
2
3
IIN2 D1
IIP2
4
VREF
OMODE
5
6 15
RP
7
VDD
8
9
FMO
10
Direction output. These outputs indicate the energy flow direction of each channel.
No Connection.
20
19
18
P1
17
D2
16
TEST
VSS
14
P2
13
INT
12
11
NCTCLK
DR-01620
Figure 2: Pin connections: Package: DIP-20, SOIC-20
ORDERING INFORMATION
Part Number
SA2007HPA
SA2007HSA
Package
DIP-20
SOIC-20
http://www.sames.co.za
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PRELIMINARY
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