We need 5 a/d channels. Can a bio-feedback input be used as a simple a/d input?
See Figure 101. Switch Matrix on the UG.
You can also change the TIA on the receive channel as a buffer - so a single ended measurement can be performed.
So if you have a spare AFEX pin you could use this to measure the 5th signal. Again it would be biased similiarly to the AUX channels around VBIAS.
So in Sequence you would need to close the IVS switch for this measurement and open it afterwards if you were also doing current measurements on the TIA.
Use ASH tool to help write sequence:
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