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How to enable the first five channel in the analog to digital convert AD7739?
I do not understand your question. What did you do? Single conversion or continuous conversions? Assuming you want to start single conversions for the first five channels, just set bits 7 to 5 of the corresponding five mode registers (0x38 to 0x3C) to "010".
Thomas
assuming i want to start continuous conversions for the first five channels,how can i do it?
Did you read the data sheet? It's all in it. As I explained before, set bit 3 (enable) in the corresponding channel setup registers (in your case they have the addresses 0x28 to 0x2C) and in the mode register of the first channel (i.e. in your case register 0x38) set the mode bits to "001".
thank's Thomas Brandl yes i have read the datasheet!now i am going to do that you explain