SA2007H Datasheet, PDF (3/10 Pages) Sames – Single Phase Bidirectional Dual Element Power/Energy Metering IC with Pulse Output

SA2007H
PIN DESCRIPTION
PIN
Designation
20
AGND
8
V_DD
14
V_SS
19
IVP
1, 2,
IIN1, IIP1
3, 4
IIN2, IIP2
5
VREF
6
OMODE
7
RP
9
10, 15
12
17, 13
FMO
TCLK, TEST
INT
P1, P2
18, 16
11
D1, D2
NC
sames
Description
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.
Analog Input for Voltage. 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.
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.
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.
Direction output. These outputs indicate the energy flow direction of each channel.
No Connection.
IIN1 1
IIP1 2
IIN2 3
IIP2 4
VREF 5
OMODE 6
RP 7
VDD ₈
FMO 9
TCLK 10
20 AGND
19 IVP
18 D1
17 P1
16 D2
15 TEST
14 VSS
13 P2
12 INT
11 NC
ORDERING INFORMATION
Part Number
SA2007HPA
SA2007HSA
Package
DIP-20
SOIC-20
DR-01620
Figure 2: Pin connections: Package: DIP-20, SOIC-20
http://www.sames.co.za
3/10
PRELIMINARY