Atmel ATtiny26, Manual

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129
ATtiny26(L)
1477G–AVR–03/05
ADC Characteristics
Note: 1. Minimum for AVCC is 2.7V.
2. Maximum for AVCC is 5.5V
Table 65. 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 = 200 kHz
1 LSB
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 1 MHz
2 LSB
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
Noise Reduction mode
1 LSB
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 1 MHz
Noise Reduction mode
2 LSB
Integral Non-Linearity (INL)
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
0.5 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
0.75 LSB
Offset error
Single Ended Conversion
V
REF
= 4V, V
CC
= 4V
ADC clock = 200 kHz
0.5 LSB
Clock Frequency 50 1000 kHz
Conversion Time 13 260 µs
AVCC Analog Supply Voltage V
CC
- 0.3
(1)
V
CC
+ 0.3
(2)
V
V
REF
Reference Voltage 2.0 AVCC V
V
IN
Input Voltage GND V
REF
V
ADC Conversion Output 0 1023 LSB
Input Bandwidth 38.5 kHz
V
INT
Internal Voltage Reference 2.4 2.7 2.9 V
R
REF
Reference Input Resistance 32 k
Ω
R
AIN
Analog Input Resistance 100 M
Ω