Transcription of Isolated Current and Voltage Measurement Using Fully ...
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Isolated Current and Voltage Measurement Using Fully ...
FILTER FERRITE BEADGNDR = 3m Ohm+5V_ISO1 GND_ISO1 GND_ISO4CH 1 MSP430FR5869CH 2CH 3CH 4CH 5CH 612 BIT SARIRIYIBVRVYVBUARTINTERFACE+EXPANSION I/OJTAGINTERFACELED(x2)COMMS/ IO(Connector)JTAG(Connector)LEDVDD_2 FILTER FERRITE BEADAMC1100 GAIN 8(Iso. Amp)ISO POWER 1+5V_ISO1-5V_ISO1 GND_ISO1 ISO POWER 2+5V_ISO2-5V_ISO2 GND_ISO2 ISO POWER 3+5V_ISO3-5V_ISO3 GND_ISO3 VDD_2 = +5V_ISO4 JUMPER (MSP430 [ ] or ADS131 [ ] EVM INTERFACE)ISO POWER 4+5V_ISO4-5V_ISO4 GND_ISO4 GNDVDD_2+5V_ISO1-5V_ISO1+/- 250 mVAMC1100 GAIN 8(Iso. Amp)AMC1100 GAIN 8(Iso. Amp)AMC1100 GAIN 8(Iso. Amp)110/ 230 VTERMINALBLOCKTERMINALBLOCKTERMINALBLOCK R = MOhmR = KOhmCH 1 ADS131E08-EVM-PDKCH 2CH 3CH 4CH 5CH 624 BIT Delta-SigmaVDD_2 = 1 OPTION 2 NOTE: FILTER, FERRITE BEAD are optionalSN6501(Transformer Driver)5V_CNTLGNDGND_ISOTLV70450( LDO)TPS7A3001( LDO)+5V_ISO-5V_ISOISO POWERW urth750342354( : )VDD_25V_CNTLTPS7A6533( LDO)GNDPOWER VTI DesignsIsolatedCurrentand VoltageMeasurementUsingFullyDifferential IsolationAmplifierDesignOverviewDesignFe aturesThis TI designdemonstratesusingthe
www.ti.com System Description Some advantages of using CTs are that they provide galvanic isolation, have low power loss, and are not affected by common-mode noise input.
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