ATMEGA644PV ATMEL [ATMEL Corporation], ATMEGA644PV Datasheet - Page 247

• Manufacturer Part Number: ATMEGA644PV
• Description: 8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

ATmega164P/324P/644P
Signal components higher than the Nyquist frequency (f
/2) should not be present for either
ADC
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 21-8. Analog Input Circuitry
I
IH
ADCn
1..100 kΩ
C
= 14 pF
S/H
I
IL
V
/2
CC
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8011D–AVR–02/07