Microchip Technology MA180025 Data Sheet
2010 Microchip Technology Inc.
DS39933D-page 425
PIC18F87J90 FAMILY
TABLE 28-24: A/D CONVERTER CHARACTERISTICS: PIC18F87J90 FAMILY (INDUSTRIAL)
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
A01
N
R
Resolution
—
—
10
bits
A03
E
IL
Integral Linearity Error
—
—
<±1
LSb
V
REF
3.0V
A04
E
DL
Differential Linearity Error
—
—
<±1
LSb
V
REF
3.0V
A06
E
OFF
Offset Error
—
—
<±3
LSb
V
REF
3.0V
A07
E
GN
Gain Error
—
—
<±3
LSb
V
REF
3.0V
A10
—
Monotonicity
Guaranteed
(1)
—
V
SS
V
AIN
V
REF
A20
V
REF
Reference Voltage Range
(V
(V
REFH
– V
REFL
)
2.0
2.0
2.0
—
—
—
—
—
—
V
V
V
V
DD
3.0V
V
DD
3.0V
A21
V
REFH
Reference Voltage High
V
SS
+
V
REF
—
V
DD
V
A22
V
REFL
Reference Voltage Low
V
SS
– 0.3V
—
V
DD
– 3.0V
V
A25
V
AIN
Analog Input Voltage
V
REFL
—
V
REFH
V
A30
Z
AIN
Recommended Impedance of
Analog Voltage Source
Analog Voltage Source
—
—
2.5
k
A50
I
REF
V
REF
Input Current
(2)
—
—
—
—
—
—
5
150
A
A
During V
AIN
acquisition.
During A/D conversion
cycle.
cycle.
Note 1: The A/D conversion result never decreases with an increase in the input voltage and has no missing
codes.
2: V
REFH
current is from RA3/AN3/V
REF
+ pin or V
DD
, whichever is selected as the V
REFH
source.
V
REFL
current is from RA2/AN2/V
REF
- pin or V
SS
, whichever is selected as the V
REFL
source.