AD7606C: Are the differential and bipolar single-ended ranges actually the same?

Hi rehfi ,

Apologies for the late response. In terms of complexity, single-ended inputs are simpler to implement, requiring fewer components and less design effort. Differential inputs, while providing superior performance, require additional circuitry such as differential amplifiers, which can increase cost and complexity.

In terms of application, bipolar single-ended are suitable for simpler applications where noise immunity is not critical, or the signal source is inherently single-ended. While for differential, it is preferred in high-precision applications, industrial environments, or where long cables are used, as they offer better noise rejection and dynamic range. Differential inputs allow flexibility in the common-mode voltage range, enabling better signal stability. In contrast, single-ended inputs are referenced to a fixed point (ground), which may limit their ability to handle noise or interference. 

Please let us know if this doesn't answer your question.

Thanks,
Francis

Hi FMarasigan ,

this doesn't answer my question at all. I didn't ask for the difference between differential and single-ended signals. I asked if the AD7606C treats the differential and single-ended ranges the same internally.

You may reread my original question, or, to give a specific case for the question: The RANGE_CHx_CHx registers have the codes "0011" and "1001" which both are ±10 V ranges, one single-ended, one differential. Everything in the datasheet screams to me that both codes result in the same PGA setting, which would mean that both settings are effectively the same.

Is this the case, or is there more to it, and what is it? 

FMarasigan & NathanT ,

please advice.

FMarasigan & NathanT ,

please advice.