Analog Devices Multiplexed A/D Converters: Can multiple AD7682/AD7689 be used side by side for SPI parallel connection?
Application Note (AN-1248) It can be used with the connection method shown in Figure 15.
Chip select is controlled using the CNV/ pin.
To prevent one from activating the SDO output while the other is in convert/output activity, it must be operated in "read-after-conversion (RAC) mode" with "no busy indicator".
Each ADC cannot convert at the same time.
(Published in April 2021)
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