PIC18F2480/2580/4480/4580
TABLE 28-24: A/D CONVERTER CHARACTERISTICS: PIC18F2480/2580/4480/4580 (INDUSTRIAL)
PIC18LF2480/2580/4480/4580 (INDUSTRIAL)
Param
No.
A01
A03
A04
A06
A07
A10
A20
A21
A22
A25
A28
A29
A30
A40
Sym
N
R
E
IL
E
DL
E
OFF
E
GN
—
Characteristic
Resolution
Integral Linearity Error
Differential Linearity Error
Offset Error
Gain Error
Monotonicity
3
AV
SS
+ 3.0V
AV
SS
– 0.3V
V
REFL
V
DD
– 0.3
V
SS
– 0.3
—
—
Min
—
—
—
—
—
Typ
—
—
—
—
—
Guaranteed
—
—
—
—
—
—
—
180
(1)
Max
10
<±1
<±1
<±2
<±1
AV
DD
– AV
SS
AV
DD
+ 0.3V
AV
DD
– 3.0V
V
REFH
V
DD
+ 0.3
V
SS
+ 0.3
2.5
—
Units
bit
Conditions
ΔV
REF
≥
3.0V
LSb
ΔV
REF
≥
3.0V
LSb
ΔV
REF
≥
3.0V
LSb
ΔV
REF
≥
3.0V
LSb
ΔV
REF
≥
3.0V
—
V
V
V
V
V
V
kΩ
μA
Average current
consumption when
A/D is on
(Note 2)
V
DD
= 2.0V;
average current
consumption when
A/D is on
(Note 2)
During V
AIN
acquisi-
tion.
During A/D conversion
cycle.
For 10-bit resolution
For 10-bit resolution
For 10-bit resolution
ΔV
REF
Reference Voltage Range
(V
REFH
– V
REFL
)
V
REFH
Reference Voltage High
V
REFL
V
AIN
AV
DD
AV
SS
Z
AIN
I
AD
Reference Voltage Low
Analog Input Voltage
Analog Supply Voltage
Analog Supply Voltage
Recommended Impedance of
Analog Voltage Source
A/D Conversion PIC18FXXXX
Current (V
DD
)
PIC18LFXXXX
—
90
—
μA
A50
I
REF
V
REF
Input Current
(Note 3)
—
—
—
—
±5
±150
μA
μA
Note 1:
2:
3:
The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
When A/D is off, it will not consume any current other than minor leakage current. The power-down current
spec includes any such leakage from the A/D module.
V
REFH
current is from RA3/AN3/V
REF
+ pin or AV
DD
, whichever is selected as the V
REFH
source.
V
REFL
current is from RA2/AN2/V
REF
- pin or AV
SS
, whichever is selected as the V
REFL
source.
DS39637D-page 456
©
2009 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
