The AD8275 is a level translator with rail-to-rail output.
But if this is true why is there an output swing ?
(VREF2 = 4.096 V, REF1 and RL connected to GND, RL = 2 kΩ)
−VS + 0.048 +VS − 0.1
I want to use this level translator with +Vs = 5V, -Vs = GND, Ref1=Ref2 = 2,048 V, RL = 8kOhm.
The calculated output for -10V input is exactly 0,048 V
The design includes a LM7705 to generate the negative supply voltage (-0,232) for the ADC.
I never found a application with -Vs of the AD8275 connected to a negative supply voltage.
Is it allowed to connect the -0,232V fron the LM7705 to the -Vs Pin of the AD8275 ?
If the answer is yes, then I can avoid to scratch with the negative output swing the not really rail-to-rail output limitation.