
PIC18F1230/1330
DS39758D-page 292
2009 Microchip Technology Inc.
TABLE 23-14: A/D CONVERTER CHARACTERISTICS
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
A01
NR
Resolution
—
10
bit
VREF 3.0V
A03
EIL
Integral Linearity Error
—
< ±1
LSb
VREF 3.0V
A04
EDL
Differential Linearity Error
—
< ±1
LSb
VREF 3.0V
A06
EOFF
Offset Error
—
< ±2
LSb
VREF 3.0V
A07
EGN
Gain Error
—
< ±1
LSb
VREF 3.0V
A10
—
Monotonicity
Guaranteed(1)
—VSS
VAIN VREF
A20
VREF
Reference Voltage Range
(VREF+ – VSS)
1.8
3
—
V
VDD
3.0V
VDD
3.0V
A21
VREF+
Positive Reference Voltage
VSS
—VREF+V
A22
VREF-
Negative Reference Voltage
VSS – 0.3V
—
VDD – 3.0V
—
A25
VAIN
Analog Input Voltage
VREF-—
VREF+V
A30
ZAIN
Recommended Impedance of
Analog Voltage Source
——
2.5
k
A50
IREF
VREF+ Input Current(2)
—
5
150
A
During VAIN 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:
VREF+ current is from RA4/T0CKI/AN2/VREF+ pin or VDD, whichever is selected as the VREF+ source.