Datasheet

344
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
Note: 1. Values are guidelines only.
Gain Error
Gain = 1×
V
CC
= 5V, V
REF
= 4V
ADC clock = 200kHz
18
LSB
Gain = 10×
V
CC
= 5V, V
REF
= 4V
ADC clock = 200kHz
19
Gain = 200×
V
CC
= 5V, V
REF
= 4V
ADC clock = 200kHz
1.5
Offset Error
Gain = 1×
V
CC
= 5V, V
REF
= 4V
ADC clock = 200kHz
-1
Gain = 10×
V
CC
= 5V, V
REF
= 4V
ADC clock = 200kHz
-1
Gain = 200×
V
CC
= 5V, V
REF
= 4V
ADC clock = 200kHz
1
Conversion Time 13 260 µs
Clock Frequency 50 1000 kHz
AVCC Analog Supply Voltage V
CC
- 0.3 V
CC
+ 0.3
V
V
REF
Reference Voltage 2.0 AVCC - 0.5
V
IN
Input Differential Voltage 0 AVCC
ADC Conversion Output -511 511 LSB
Input Bandwidth 4 kHz
V
INT1
Internal Voltage Reference 1.1V 1.0 1.1 1.2
V
V
INT2
Internal Voltage Reference 2.56V 2.33 2.56 2.79
R
REF
Reference Input Resistance 32 k
Table 28-18. ADC characteristics, differential channels. (Continued)
Symbol Parameter Condition Min.
(1)
Typ.
(1)
Max.
(1)
Units