Datasheet

293
2503Q–AVR–02/11
ATmega32(L)
ADC Characteristics
Notes: 1. Minimum for AVCC is 2.7V.
2. Maximum for AVCC is 5.5V.
Table 121. ADC Characteristics, Single Ended channels, T
A
= -40°C to 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 = 200kHz
1.5
LSB
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 1MHz
3
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200kHz
Noise Reduction mode
1.5
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 1MHz
Noise Reduction mode
3
Integral Non-Linearity (INL)
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200kHz
0.75
Differential Non-linearity (DNL)
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200kHz
0.25
Gain Error
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200kHz
0.75
Offset Error
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200kHz
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 bandwith 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 100 MΩ