
211
8008H–AVR–04/11
ATtiny48/88
22.7
ADC Characteristics
Note:
1. AV
CC absolute min/max: 1.8V/5.5V
Table 22-6.
ADC Characteristics , Single Ended Channels. -40
°C to +85°C
Symbol
Parameter
Condition
Min
Typ
Max
Units
Resolution
10
Bits
Absolute accuracy (Including
INL, DNL, quantization error,
gain and offset error)
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
2LSB
VREF = 4V, VCC = 4V,
ADC clock = 1 MHz
3LSB
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
Noise Reduction Mode
1.5
LSB
VREF = 4V, VCC = 4V,
ADC clock = 1 MHz
Noise Reduction Mode
2.5
LSB
Integral Non-Linearity (INL)
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
1LSB
Differential Non-Linearity
(DNL)
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
0.5
LSB
Gain Error
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
2.5
LSB
Offset Error
VREF = 4V, VCC = 4V,
ADC clock = 200 kHz
1.5
LSB
Conversion Time
Free Running Conversion
13
260
s
Clock Frequency
50
1000
kHz
AVCC
Analog Supply Voltage
(1)VCC - 0.3
VCC + 0.3
V
VREF
Reference Voltage
VINT
AVCC
V
VIN
Input Voltage
GND
VREF
V
Input Bandwidth
38.5
kHz
VINT
Internal Voltage Reference
1.0
1.1
1.2
V
RREF
Reference Input Resistance
32
k
Ω
RAIN
Analog Input Resistance
100
M
Ω