Atmel ATmega48PV

325
8025I–AVR–02/09
ATmega48P/88P/168P/328P
26.8 ADC Characteristics – Preliminary Data
Note: 1. AV
CC
absolute min/max: 1.8V/5.5V
Table 26-7. ADC Characteristics
Symbol Parameter Condition Min Typ Max Units
Resolution 10 Bits
Absolute accuracy (Including
INL, DNL, quantization error,
gain and offset error)
V
REF
= 4V, V
CC
= 4V,
ADC clock = 200 kHz
2LSB
V
REF
= 4V, V
CC
= 4V,
ADC clock = 1 MHz
4.5 LSB
V
REF
= 4V, V
CC
= 4V,
ADC clock = 200 kHz
Noise Reduction Mode
2LSB
V
REF
= 4V, V
CC
= 4V,
ADC clock = 1 MHz
Noise Reduction Mode
4.5 LSB
Integral Non-Linearity (INL)
V
REF
= 4V, V
CC
= 4V,
ADC clock = 200 kHz
0.5 LSB
Differential Non-Linearity
(DNL)
V
REF
= 4V, V
CC
= 4V,
ADC clock = 200 kHz
0.25 LSB
Gain Error
V
REF
= 4V, V
CC
= 4V,
ADC clock = 200 kHz
2LSB
Offset Error
V
REF
= 4V, V
CC
= 4V,
ADC clock = 200 kHz
2LSB
Conversion Time Free Running Conversion 13 260 µs
Clock Frequency 50 1000 kHz
AV
CC
(1)
Analog Supply Voltage V
CC
- 0.3 V
CC
+ 0.3 V
V
REF
Reference Voltage 1.0 AV
CC
V
V
IN
Input Voltage GND V
REF
V
Input Bandwidth 38.5 kHz
V
INT
Internal Voltage Reference 1.0 1.1 1.2 V
R
REF
Reference Input Resistance 32 kΩ
R
AIN
Analog Input Resistance 100 MΩ