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Method to address 32 or more ADCs on the same SPI bus?

Question asked by mwfortner on Sep 4, 2013
Latest reply on Sep 9, 2013 by mwfortner

Hello,

 

I have a customer that is currently looking into an ADC of 10 or 12 bit resolution which will operate at pretty low speed and utilize an I2C
interface.

 

We have alot of parts that fit the basic requirements, but what's tricky is that they need to address 32 of them or possibly even more on the same bus, so they need a method to provide/utilize a 5 or 6 bit address. 

 

I see lots of ADC that fit the resolution/speed/interface requirement, but they all seem to utilize 2 or 3 bit addressing.

 

Has this issue come up in the past? Is there a way to address 32 or more ADCs on the same SPI bus?

 

Thanks in advance for your help.

 

Mike

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