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AD5674 Datasheet(PDF) 31 Page - Analog Devices

Part # AD5674
Description  16-Channel, 12-/16-Bit nanoDAC with 2 ppm/°C Voltage Reference Temperature Coefficient, SPI Interface
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5674 Datasheet(HTML) 31 Page - Analog Devices

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Data Sheet
AD5674/AD5674R/AD5679/AD5679R
Rev. B | Page 31 of 32
GALVANICALLY ISOLATED INTERFACE
In many process control applications, it is necessary to provide
an isolation barrier between the controller and the unit being
controlled to protect and isolate the controlling circuitry from
any hazardous common-mode voltages that can occur. iCoupler®
products from Analog Devices can provide voltage isolation
>2.5 kV. The serial loading structure of the AD5679R makes the
device ideal for isolated interfaces because the number of interface
lines is kept to a minimum. Figure 71 shows a 4-channel, isolated
interface to the AD5674/AD5674R/AD5679/AD5679R using
the ADuM1400. For further information, visit
www.analog.com/icoupler.
Figure 71. Isolated Interface
ENCODE
SERIAL
CLOCK IN
CONTROLLER
ADuM14001
SERIAL
DATA OUT
SYNC
LOAD DAC
1ADDITIONAL PINS OMITTED FOR CLARITY.
OUT
DECODE
TO
SCLK
TO
SDI
TO
TO
LDAC
VIA
VOA
ENCODE
DECODE
VIB
VOB
ENCODE
DECODE
VIC
VOC
ENCODE
DECODE
VID
VOD
SYNC



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