Datasheet

332
2490R–AVR–02/2013
ATmega64(L)
ADC Characteristics
Notes: 1. Minimum for AVCC is 2.7V.
2. Maximum for AVCC is 5.5V.
Table 135. ADC Characteristics, Single Ended Channels, -40C – 85C
Symbol Parameter Condition Min Typ Max Units
Resolution Single Ended Conversion 10 Bits
Absolute Accuracy
(Including INL, DNL, Quantization Error, Gain
and Offset Error)
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
1.5
LSB
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 1 MHz
3
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
Noise Reduction mode
1.5
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 1 MHz
Noise Reduction mode
3
Integral Non-Linearity (INL)
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
0.75
Differential Non-Linearity (DNL)
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
0.25
Gain Error
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
0.75
Offset error
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
0.75
Clock Frequency 50 1000 kHz
Conversion Time 13 260 µs
AVCC Analog Supply Voltage V
CC
–0.3
(1)
V
CC
+ 0.3
(2)
VV
REF
Reference Voltage 2.0 AVCC
V
IN
Input Voltage GND V
REF
ADC Conversion Output 0 1023 LSB
Input Bandwidth 38.5 kHz
V
INT
Internal Voltage Reference 2.4 2.56 2.8 V
R
REF
Reference Input Resistance 32 k
R
AIN
Analog Input Resistance 100 M