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SA9604APA Datasheet(PDF) 4 Page - Sames |
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SA9604APA Datasheet(HTML) 4 Page - Sames |
4 / 20 page SA9604A sames 4/20 PIN DESCRIPTION Pin Designation Description 16 GND Ground 6 V DD Positive Supply Voltage 14 V SS Negative Supply Voltage 17 IVP1 Analog input for Voltage: Phase 1 20 IVP2 Analog input for Voltage: Phase 2 3 IVP3 Analog input for Voltage: Phase 3 19 IIN1 Inputs for Current sensor:Phase 1 18 IIP1 2 IIN2 Input for Current sensor: Phase 2 1 IIP2 5 IIN3 Input for Current sensor: Phase 3 4 IIP3 10 OSC1 Connections for crystal or ceramic resonator 11 OSC2 (OSC1 = Input; OSC2 = Output) 9 DO Serial Interface Out 12 DI Serial Interface In 8 SCK Serial Clock In 13 CS Chip Select (Active High) 7 FM150 Voltage Sense Zero Crossover 15 VREF Connection for current setting resistor FUNCTIONAL DESCRIPTION The SA9604A is a CMOS mixed signal Analog/Digital Integrated Circuit, which performs the measurement of active power, reactive power, voltage and frequency. Internal offsets are eliminated through the use of cancellation procedures. The SA9604A integrates the measured active and reactive power consumption and the average mains voltage into 24 bit integrators, which are accessable via the SPI bus. The mains frequency information is also available as a 24 bit register value. The zero crossover of each voltage sense input is signalled on the FM150 (pin 7) output. This output of 150Hz will allow monitoring by a microcontroller to synchronise with internal timing for data aquisition. Refer to 5.5 for further information. The SA9604A has tristate output to allow connection of more than one metering device on a single SPI bus. |
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