I tried to convert the diagnostic channel Vcc but the output codes were much different from those shown in Figure 66.
My test results are as follows.
Vcc=4.5V --> 14950, Vcc=4.8V --> 16351, Vcc=5.0V --> 17205, Vcc=5.2V --> 18097, Vcc=5.5V --> 19520
Codes (test results) increasing approximately linearly but they are much lower than those shown in Figure 66.
What would be the cause of this issue?
(Test condition: throughput rate=700sps, using the inetrnal reference=4.096V, Vcc=5V)
The A/D conversion using the 16 analog inputs, VxA and VxB, works normally, the conversion using the Vcc does not work well.