Datasheet

133
ATmega323(L)
1457E–11/01
Notes: 1. Values are guidelines only. Actual values are TBD.
2. Minimum for AV
CC
is 2.7V.
3. Maximum for AV
CC
is 5.5V.
ADC Characteristics – Preliminary Data
(1)
Symbol Parameter Condition Min
(2)
Typ Max
(3)
Units
Resolution
Single-ended
Conversion
10 Bits
Absolute
accuracy
V
REF
= 4V
ADC clock = 200 kHz
12LSB
Absolute
accuracy
V
REF
= 4V
ADC clock = 1 MHz
4LSB
Absolute
accuracy
V
REF
= 4V
ADC clock = 2 MHz
16 LSB
Integral
Non-linearity
V
REF
> 2V 0.5 LSB
Differential
Non-linearity
V
REF
> 2V 0.5 LSB
Zero Error
(Offset)
V
REF
> 2V 1 LSB
Conversion
Time
Free Running
Conversion
65 260 µs
Clock
Frequency
50 200 kHz
AV
CC
Analog
Supply
Voltage
V
CC
- 0.3
(2)
V
CC
+ 0.3
(3)
V
V
REF
Reference
Voltage
2 V AV
CC
V
VINT
Internal
Voltage
Reference
2.35 2.56 2.77 V
V
BG
Bandgap
Voltage
Reference
1.12 1.22 1.32 V
R
REF
Reference
Input
Resistance
61013kΩ
V
IN
Input
Voltage
AGND AREF V
R
AIN
Analog Input
Resistance
100 MΩ