PIC18FXX20 Datasheet, PDF (341/366 Pages) Microchip Technology – 64/80-Pin High Performance 1 Mbit Enhanced FLASH Microcontrollers with A/D

PIC18FXX20
TABLE 26-25: A/D CONVERTER CHARACTERISTICS: PIC18FXX20 (INDUSTRIAL, EXTENDED)
PIC18LFXX20 (INDUSTRIAL)
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
A01 NR
Resolution
—
—
10
bit VREF = VDD ≥ 3.0V
—
—
TBD
bit VREF = VDD < 3.0V
A03 EIL
Integral linearity error
—
—
<±1
LSb VREF = VDD ≥ 3.0V
—
—
TBD
LSb VREF = VDD < 3.0V
A04 EDL
Differential linearity error
—
—
<±1
LSb VREF = VDD ≥ 3.0V
—
—
TBD
LSb VREF = VDD < 3.0V
A05 EFS
Full scale error
—
—
<±1
LSb VREF = VDD ≥ 3.0V
—
—
TBD
LSb VREF = VDD < 3.0V
A06 EOFF Offset error
—
—
<±1
LSb VREF = VDD ≥ 3.0V
—
—
TBD
LSb VREF = VDD < 3.0V
A10 —
Monotonicity
guaranteed⁽³⁾
— VSS ≤ VAIN ≤ VREF
A20 VREF
A20A
Reference voltage
(VREFH - VREFL)
0V
—
—
V
3V
—
—
V For 10-bit resolution
A21 VREFH Reference voltage High
AVss
— AVDD + 0.3V V
A22 VREFL Reference voltage Low
AVss – 0.3V —
AVDD
V
A25 VAIN Analog input voltage
AVSS – 0.3V — VREF + 0.3V V
A30 ZAIN Recommended impedance of
—
analog voltage source
—
10.0
kΩ
A40 IAD
A/D conversion PIC18FXX20
—
180
—
µA Average current
current (VDD) _PIC18LFXX20
—
90
—
µA ^{consumption when}
A/D is on (Note 1)
A50 IREF
VREF input current (Note 2)
10
—
1000
µA During VAIN acquisition.
Based on differential of
VHOLD to VAIN. To charge
CHOLD see Section 19.0.
—
—
10
µA During A/D conversion
cycle.
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.
VREF current is from RA2/AN2/VREF- and RA3/AN3/VREF+ pins or AVDD and AVSS pins, whichever is selected
as reference input.
2: Vss ≤ VAIN ≤ VREF
3: The A/D conversion result never decreases with an increase in the input voltage, and has no missing codes.
 2003 Microchip Technology Inc.
Advance Information
DS39609A-page 339