Information

dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
DS80526C-page 14 © 2011-2012 Microchip Technology Inc.
34. Module: ADC
Selecting the same ANx input (AN0 or AN3) for
CH0 and CH1 to achieve a 1.1 Msps sampling rate
results in erroneous readings for CH1.
Work around
Bring the analog signal into the device using both
AN0 and AN3, connect externally, and then assign
one input to CH0 and the other to CH1.
If selecting AN0 on CH1 (CH123Sx = 0), select
AN3 on CH0 (CH0Sx = 3). Conversely, if selecting
AN3 on CH1 (CH123Sx = 1), select AN0 on CH0
(CH0Sx = 0).
Affected Silicon Revisions
B1
X