Atmel ATmega32M1

323
7647H–AVR–03/12
Atmel ATmega16/32/64/M1/C1
Table 26-6. ADC Characteristics in differential mode - 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
Differential conversion, gain = 5x 8
Bits
Differential conversion, gain = 10x 8
Differential conversion, gain = 20x 8
Differential conversion, gain = 40x 8
TUE Absolute accuracy
Gain = 5x, 10x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
1.5 3.5
LSB
Gain = 20x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
1.5 4.0
Gain = 40x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
1.5 4.5
INL Integral Non-linearity
Gain = 5x, 10x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
0.1 1.5
LSB
Gain = 20x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
0.2 2.5
Gain = 40x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 1 MHz
0.3 3.5
Gain = 40x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
0.7 4.5
DNL Differential Non-linearity
Gain = 5x, 10x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
0.1 1.0
LSB
Gain = 20x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
0.2 1.5
Gain = 40x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
0.3 2.5
Gain error
Gain = 5x, 10x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
-3.0 +3.0
LSB
Gain = 20x, 40x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
-3.0 +3.0
Offset error
Gain = 5x, 10x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
-3.0 +3.0
LSB
Gain = 20x, 40x, V
CC
=5V,
V
REF
= 2.56V, ADC clock = 2 MHz
-4.0 +4.0
V
REF
Ref voltage 2.56 AVCC - 0.5 V