Atmega163(l), Adc characteristics - preliminary data – Rainbow Electronics ATmega163L User Manual
Page 98
ATmega163(L)
98
Figure 62. ADC Power Connections
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.
GND
VCC
P
A0 (ADC0)
P
A1 (ADC1)
P
A2 (ADC2)
P
A3 (ADC3)
PA4 (ADC4)
PA5 (ADC5)
PA6 (ADC6)
PA7 (ADC7)
AREF
AVCC
AGND
PC7
10
µΗ
100nF
Analog Ground Plane
ATmega163
39
35
37
33
32
38
34
36
43
41
42
40
44
1
ADC Characteristics - Preliminary Data
Symbol
Parameter
Condition
Min
Typ
Max
Units
Resolution
Single-ended Conversion
10
Bits
Absolute accuracy
V
REF
= 4V
ADC clock = 200 kHz
1
2
LSB
Absolute accuracy
V
REF
= 4V
ADC clock = 1 MHz
4
LSB
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
V
CC
+ 0.3
V
V
REF
Reference Voltage
2 V
AV
CC
V
V
INT
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
6
10
13
k
Ω
V
IN
Input Voltage
AGND
AREF
V
R
AIN
Analog Input Resistance
100
M
Ω