Isolated A/D Converters

As the world's leading supplier of data converters, Analog Devices are constantly introducing new ADCs that drive system architectures and deliver breakthrough combinations of performance and functionality. In the area of motor control, ADI’s converters solve the challenges associated with current and voltage monitoring, optical encoder feedback, and resolver-to-digital conversion. Specifically the introduction of the Isolated A/D Converter with its 3.75kV stand-off voltage is one example of the performance breathroughs and integration to ease the burden of design.

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Isolated A/D Converters

Part#Resolution (Bits)Sample RateClk Int/ExtENOB (typ)THD (typ)Specs at Frequency (MHz)Vref Int/ExtCircuit ArchitectureVsupply Positive (min)Vsupply Positive (max)Internal Clearance-Internal Gap (min)Creepage-External Tracking (min)Viorm VDE (max)Viotm VDE (max)Viso UL1577 (min)
AD7403 16 20 MSPS Ext 14.2 -96 1 kHz Int Sigma-Delta Modulator 3 5.5 - - - - -
ADE7913 24 4 MSPS Ext - -82 2 kHz Int Sigma-Delta 2.97 3.63 - - - - -
ADE7912 24 4 MSPS Ext - -82 2 kHz Int Sigma-Delta 2.97 3.63 - - - - -
AD7401AReference Circuit Available 16 20 MSPS Ext 13.3 -90 - Int Sigma-Delta Modulator 4.5 5.5 - - - - -
AD7400AReference Circuit Available 16 10 MSPS Int 12.5 -84 - Int Sigma-Delta Modulator 4.5 5.5 - - - - -
AD7401 16 20 MSPS Ext 11.5 92 - Int Sigma-Delta Modulator 4.5 5.5 - - - - -
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