ATmega8(L)
ADC Characteristics
Table 103. ADC Characteristics
Symbol
Parameter
Condition
Min(1)
Typ(1)
Max(1)
Units
Resolution
Single Ended Conversion
10
Bits
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200kHz
1.75
3
Absolute accuracy
(including INL, DNL,
Quantization Error, Gain,
and Offset Error)
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 1MHz
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200kHz
Integral Non-linearity (INL)
0.75
LSB
Single Ended Conversion
V
REF = 4V, VCC = 4V
Differential Non-linearity
(DNL)
ADC clock = 200kHz
0.5
1
Gain Error
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200kHz
Offset Error
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200kHz
1
Conversion Time(4)
Clock Frequency
Free Running Conversion
13
50
260
1000
µs
kHz
Analog Supply Voltage
Reference Voltage
VCC - 0.3(2)
VCC + 0.3(3)
AVCC
VREF
VIN
2.0
AVCC
VREF
V
Input voltage
GND
Input bandwidth
38.5
2.56
32
kHz
V
VINT
RREF
RAIN
Internal Voltage Reference
Reference Input Resistance
Analog Input Resistance
2.3
55
2.9
k
M
100
Notes: 1. Values are guidelines only
2. Minimum for AVCC is 2.7V
3. Maximum for AVCC is 5.5V
4. Maximum conversion time is 1/50kHz × 25 = 0.5ms
241
2486AA–AVR–02/2013
ATMEL [ ATMEL ]
