Rainbow Electronics ATmega64C1 - Manual (Page 316)

316
7647A–AVR–02/08
ATmega32/64/M1/C1
25.8 ADC Characteristics
Table 25-2. ADC Characteristics - T
A
= -40
°
C to +125
°
C, V
CC
= 2.7V to 5.5V (unless otherwise noted)
Symbol Parameter Condition Min Typ Max Units
Resolution
Single Ended Conversion 10 Bits
Differential Conversion 8 Bits
Absolute accuracy
Single Ended Conversion
V
REF
= 2.56V
ADC clock = 500 kHz
2.5 LSB
Single Ended Conversion
V
REF
= 2.56V
ADC clock = 1MHz
6 LSB
Single Ended Conversion
V
REF
= 2.56V
ADC clock = 2MHz
LSB
Differential Conversion
V
REF
= 2.56V
ADC clock = 500 kHz
2 LSB
Differential Conversion
V
REF
= 2.56V
ADC clock = 1MHz
3 LSB
Integral Non-linearity
Single Ended Conversion
V
CC
= 4.5V, V
REF
= 2.56V
ADC clock = 1MHz
1.1 LSB
Single Ended Conversion
V
CC
= 4.5V, V
REF
= 2.56V
ADC clock = 500 kHz
0.6 LSB
Differential Conversion
V
CC
= 4.5V, V
REF
= 2.56V
ADC clock = 1MHz
1.5 LSB
Differential Conversion
V
CC
= 4.5V, V
REF
= 2.56V
ADC clock = 500 kHz
1 LSB
Differential Non-linearity
Single Ended Conversion
V
CC
= 4.5V, V
REF
= 4V
ADC clock = 1MHz
0.4 LSB
Single Ended Conversion
V
CC
= 4.5V, V
REF
= 4V
ADC clock = 500 kHz
0.3 LSB
Differential Conversion
V
CC
= 4.5V, V
REF
= 4V
ADC clock = 1MHz
0.5 LSB
Differential Conversion
V
CC
= 4.5V, V
REF
= 4V
ADC clock = 500 kHz
0.4 LSB