Microchip Technology MA180025 Data Sheet

Page of 450
 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
REFH
 – V
REFL
)
2.0
2.0


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
2.5
k
A50
I
REF
V
REF
 Input Current
(2)


5
150
A
A
During V
AIN
 acquisition.
During A/D conversion 
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.