Atmel ATmega128 User Manual

325
2467S–AVR–07/09
ATmega128
ADC Characteristics
Notes: 1. Values are guidelines only.
2. Minimum for AVCC is 2.7V.
3. Maximum for AVCC is 5.5V
Table 135. ADC Characteristics, Single Ended Channels
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
1.5 LSB
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 1 MHz
3.25 LSB
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
Noise Reduction mode
1.5 LSB
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 1 MHz
Noise Reduction mode
3.75 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
1LSB
Offset error
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
1LSB
Clock Frequency 50 1000 kHz
Conversion Time 13 260 µs
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

Atmel ATmega128 Specifications

General

Brand	Atmel
Model	ATmega128
Category	Microcontrollers
Language	English