Regarding the AD22151, I would appreciate a graph or other data regarding the dependence of the output voltage range on output current. According to the datasheet, the drive capability is 1 mA and the minimum and maximum output voltage is 5% and 93% of Vcc, while the linear range is from 10% to 90% of Vcc.
We supplied 5 V for Vcc and got the following results:
With an output current of 0 A, our output voltage range saturates at a min of 0.5 V and max of 4.5 V.
With an output current of 0.35 mA, our output voltage range saturates at a min of 1 V and max of 4 V.
Is this expected? And as mentioned, is there data available for other values of current?