
PIC18F6X2X/8X2X
DS39612A-page 356
Advance Information
2003 Microchip Technology Inc.
TABLE 27-25: A/D CONVERTER CHARACTERISTICS: PIC18F6X2X/8X2X (INDUSTRIAL, EXTENDED)
PIC18LF6X2X/8X2X (INDUSTRIAL)
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
A01
N
R
Resolution
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
10
TBD
<±1
TBD
<±1
TBD
<±1
TBD
<±1
TBD
bit
bit
LSb
LSb
LSb
LSb
LSb
LSb
LSb
LSb
—
V
V
V
V
V
k
V
REF
= V
DD
≥
3.0V
V
REF
= V
DD
<
3.0V
V
REF
= V
DD
≥
3.0V
V
REF
= V
DD
<
3.0V
V
REF
= V
DD
≥
3.0V
V
REF
= V
DD
<
3.0V
V
REF
= V
DD
≥
3.0V
V
REF
= V
DD
<
3.0V
V
REF
= V
DD
≥
3.0V
V
REF
= V
DD
<
3.0V
V
SS
≤
V
AIN
≤
V
REF
A03
E
IL
Integral linearity error
A04
E
DL
Differential linearity error
A05
E
FS
Full scale error
A06
E
OFF
Offset error
A10
A20
A20A
A21
A22
A25
A30
—
V
REF
Monotonicity
Reference voltage
(V
REFH
– V
REFL
)
guaranteed
(3)
—
—
—
—
—
—
0V
3V
AV
SS
—
—
For 10-bit resolution
V
REFH
V
REFL
V
AIN
Z
AIN
Reference voltage High
Reference voltage Low
Analog input voltage
Recommended impedance of
analog voltage source
A/D conversion
current (V
DD
)
AV
DD
+ 0.3V
AV
DD
V
REF
+ 0.3V
10.0
AV
SS
– 0.3V
AV
SS
– 0.3V
—
A40
I
AD
PIC18F6X2X/8X2X
PIC18LF6X2X/8X2X
—
—
180
90
—
—
μ
A
μ
A
Average current
consumption when
A/D is on
(Note 1)
During V
AIN
acquisition.
Based on differential of
V
HOLD
to V
AIN
. To
charge C
HOLD
, see
Section 20.0.
During A/D conversion
cycle.
A50
I
REF
V
REF
input current
(Note 2)
10
—
—
—
1000
10
μ
A
μ
A
Note 1:
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
REF
current is from RA2/AN2/V
REF
- and RA3/AN3/V
REF
+ pins or AV
DD
and AV
SS
pins, whichever is selected
as reference input.
Vss
≤
V
AIN
≤
V
REF
The A/D conversion result never decreases with an increase in the input voltage, and has no missing codes.
2:
3: