AT90S/LS2333 and AT90S/LS4433
58
Figure 49. ADC Power Connections
Note that since AV
CC
feeds the Port C output drivers, the RC network shown should not be employed if any Port C serve as
outputs.
Notes:
1. Minimum for AV
CC
is 2.7V.
2. Maximum for AV
CC
is 6.0V.
ADC Characteristics,
TA = -40
°
C to 85
°
C
Symbol
Parameter
Condition
Min
Typ
Max
Units
Resolution
10
Bits
Absolute accuracy
VREF = 4V
ADC clock = 200 kHz
1
2
LSB
Absolute accuracy
VREF = 4V
ADC clock = 1 MHz
4
LSB
Absolute accuracy
VREF = 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)
1
LSB
Conversion Time
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
AGND
AV
CC
V
R
REF
Reference Input Resistance
6
10
13
k
Ω
R
AIN
Analog Input Resistance
100
M
Ω
28
27
26
25
24
23
22
21
20
19
PC5 (ADC5)
PC4 (ADC4)
PC3 (ADC3)
PC2 (ADC2)
PC1 (ADC1)
PC0 (ADC0)
AGND
AREF
AVCC
PB5
100R
VCC
10nF
Analog Ground Plane
AT90S2333/4433