Datasheet

250
8272A–AVR–01/10
164A/164PA/324A/324PA/644A/644PA/1284/1284P
Signal components higher than the Nyquist frequency (f
ADC
/2) should not be present for either
kind of channels, to avoid distortion from unpredictable signal convolution. The user is advised
to remove high frequency components with a low-pass filter before applying the signals as
inputs to the ADC.
Figure 22-8. Analog Input Circuitry
ADCn
I
IH
1..100 kΩ
C
S/H
= 14 pF
V
CC
/2
I
IL