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 = 200 kHz
1.75
3
LSB
LSB
Absolute accuracy
(Including INL, DNL,
Quantization Error, Gain,
and Offset Error)
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 1 MHz
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200 kHz
Integral Non-linearity (INL)
0.75
LSB
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200 kHz
Differential Non-linearity
(DNL)
0.5
1
LSB
LSB
Gain Error
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200 kHz
Offset Error
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200 kHz
1
LSB
Conversion Time
Free Running Conversion
µs
kHz
V
Clock Frequency
50
VCC - 0.3(2)
2.0
1000
VCC + 0.3(3)
AVCC
AVCC
VREF
VIN
Analog Supply Voltage
Reference Voltage
Input voltage
V
GND
VREF
V
Input bandwidth
38.5
2.56
32
kHz
V
VINT
RREF
RAIN
Internal Voltage Reference
Reference Input Resistance
Analog Input Resistance
2.3
55
2.7
kΩ
MΩ
100
Notes: 1. Values are guidelines only.
2. Minimum for AVCC is 2.7V.
3. Maximum for AVCC is 5.5V.
243
2486M–AVR–12/03
ATMEL [ ATMEL ]
