Datasheet

243
ATmega8(L)
2486M–AVR–12/03
ADC Characteristics
Notes: 1. Values are guidelines only.
2. Minimum for AV
CC
is 2.7V.
3. Maximum for AV
CC
is 5.5V.
Table 103. ADC Characteristics
Symbol Parameter Condition Min
(1)
Typ
(1)
Max
(1)
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
1.75 LSB
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 1 MHz
3 LSB
Integral Non-linearity (INL)
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz 0.75 LSB
Differential Non-linearity
(DNL)
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz 0.5 LSB
Gain Error Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
1 LSB
Offset Error Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
1 LSB
Conversion Time Free Running Conversion µs
Clock Frequency 50 1000 kHz
AVCC Analog Supply Voltage V
CC
- 0.3
(2)
V
CC
+ 0.3
(3)
V
V
REF
Reference Voltage 2.0 AVCC V
V
IN
Input voltage GND V
REF
V
Input bandwidth 38.5 kHz
V
INT
Internal Voltage Reference 2.3 2.56 2.7 V
R
REF
Reference Input Resistance 32 kΩ
R
AIN
Analog Input Resistance 55 100 MΩ