Isolated A/D Converters

As the world’s leading supplier of data converters, Analog Devices is constantly introducing new A/D converters (ADCs) that drive system architectures. In the motor control arena, ADI’s converters solve the challenges associated with current and voltage monitoring, optical encoder feedback, and resolver-to-digital conversion. The introduction of the isolated ADC with its 3.75 kV standoff voltage is one example of ADI’s breakthroughs in performance and integration to ease the burden of design.
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Isolated A/D Converters

Isolated A/D Converters

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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)
AD7402 - - - - -84 - Int Sigma-Delta Modulator 3 5.5
AD7405 16 20 MSPS External 13.5 - - Internal Sigma-Delta Modulator 3.3 5.5
AD7403-8 16 20 MSPS External 14.2 -94 1 kHz - Sigma-Delta Modulator 4.5 5.5
ADE7912 24 4 MSPS Ext - -82 2 kHz Int Sigma-Delta 2.97 3.63