Isolated Sigma Delta ADCs

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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PRODUCT SELECTION TABLES

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)
AD7405 - - - - - - - - - - - - - - -
AD7403 16 20 MSPS Ext 14.2 -96 1 kHz Int Sigma-Delta Modulator 3 5.5 - - - - -
ADE7912 24 4 MSPS Ext - -82 2 kHz Int Sigma-Delta 2.97 3.63 - - - - -
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