| Jinhong Wang wrote: |
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Does it mean that this buffer shifts a voltage of about 1.3V for the primary differential range?
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No. It shifts about ROFS-0.25V. So only if ROFS=1.55V, the shift will be 1.3V.
| Jinhong Wang wrote: |
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Again for the differential range of -0.5V~0.5V, can the common mode voltage of the analog output at OUT+/OUT- be chaned?
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Just read the datasheet under "ANALOG OUTPUTS". I'm sorry if I did not describe this clearly, but the U+ voltage is fixed (only dependent on ROFS), and U- can be calculated using Uofs as written in the datasheet.
| Jinhong Wang wrote: |
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In the example presented in the datasheet, OUT+ is 0.8V~1.8V and OUT- is 1.8V~0.8V. So for an output swing of 2V p-p, can the common mode voltage be modified to the desired value? Supposed that the input ranges from -0.5V~0.5V.
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OUT+ is 0.8V~1.8V, OUT- is 2*Uofs-OUT+. So you can only change the OUT- level, not the OUT+ level. |