SA9605A
PIN DESCRIPTION
Designation
Description
Pin
16
6
GND
VDD
Ground
Positive Supply Voltage
Negative Suply Voltage
14
VSS
17
20
3
IVN1
IVN2
IVN3
IIN1
Analog input for Voltage : Phase 1
Analog input for Voltage : Phase 2
Analog input for Voltage : Phase 3
Inputs for Current sensor : Phase 1
19
18
2
IIP1
IIN2
Inputs for Current sensor : Phase 2
Inputs for Current sensor : Phase 3
1
IIP2
5
IIN3
4
IIP3
10
11
7
OSC1
OSC2
FOUT1
FOUT2
DIR
Connections for crystal or ceramic resonator
(OSC1 = Input ; OSC2 = Output)
Pulse rate outputs
8
9
Direction indicator
12
13
15
PGM0
PGM1
VREF
FOUT2 Frequency select pins
Connection for current setting resistor
FUNCTIONAL DESCRIPTION
The SAMES SA9605A is a CMOS mixed signal Analog/Digital integrated circuit, which
performs three phase power/energy calculations over a range of 1000:1, to an overall
accuracy of better than Class 1.
The SA9605A in both DIP-20 and SOIC-20 package options is functionally similar to the
SA9105E and SA9105F with the advantage of no external loop capacitors.
The integrated circuit includes all the required functions for 3-phase power and energy
measurement such as oversampling A/D converters for the voltage and current sense
inputs, power calculation and energy integration. Internal offsets are eliminated through
the use of cancellation procedures.
The SA9605A generates pulses, the frequency of which is proportional to the power
consumption. Twofrequencyoutputs(FOUT1andFOUT2)areavailable. Thepulserate
follows the instantaneous power measured.
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sames
SAMES [ SAMES ]
