PIC18F6390/6490/8390/8490
TABLE 26-23: A/D CONVERTER CHARACTERISTICS: PIC18F6390/6490/8390/8490 (INDUSTRIAL)
PIC18LF6390/6490/8390/8490 (INDUSTRIAL)
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
A01
NR
Resolution
—
—
—
—
—
—
10
bit ΔVREF ≥ 3.0V
A03
A04
A06
A07
A10
A20
EIL
Integral Linearity Error
Differential Linearity Error
Offset Error
—
<±1
<±1
<±1
<±1
LSb ΔVREF ≥ 3.0V
LSb ΔVREF ≥ 3.0V
LSb ΔVREF ≥ 3.0V
LSb ΔVREF ≥ 3.0V
—
EDL
EOFF
EGN
—
—
—
—
Gain Error
Monotonicity
Guaranteed(1)
ΔVREF Reference Voltage Range
3
—
AVDD – AVSS
V
For 10-bit resolution
(VREFH – VREFL)
A21
A22
A25
A30
VREFH Reference Voltage High
AVSS + 3.0V
AVSS – 0.3V
VREFL
—
—
—
—
AVDD + 0.3V
AVDD – 3.0V
VREFH
V
V
For 10-bit resolution
For 10-bit resolution
VREFL
VAIN
Reference Voltage Low
Analog Input Voltage
V
ZAIN
Recommended Impedance of
Analog Voltage Source
—
2.5
kΩ
A50
IREF
VREF Input Current (Note 2)
—
—
—
—
±5
±150
μA During VAIN acquisition.
μA 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: VREFH current is from RA3/AN3/VREF+/SEG17 pin or AVDD, whichever is selected as the VREFH source.
VREFL current is from RA2/AN2/VREF-/SEG16 pin or AVSS, whichever is selected as the VREFL source.
DS39629C-page 384
© 2007 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
