PIC18F258 Datasheet, PDF (354/384 Pages) Microchip Technology – High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN

PIC18FXX8
TABLE 27-23: A/D CONVERTER CHARACTERISTICS: PIC18FXX8 (INDUSTRIAL, EXTENDED)
PIC18LFXX8 (INDUSTRIAL)
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
A01 NR
Resolution
A03 EIL
Integral linearity error
A04 EDL
Differential linearity error
A05 EFS
Full scale error
A06 EOFF Offset error
A10
A20
A20A
—
VREF
Monotonicity
Reference voltage
(VREFH – VREFL)
—
—
10
—
—
TBD
—
—
<±1
—
—
TBD
—
—
<±1
—
—
TBD
—
—
<±1
—
—
TBD
—
—
<±1.5
—
—
TBD
guaranteed⁽³⁾
0V
—
—
3V
—
—
bit VREF = VDD ≥ 3.0V
bit VREF = VDD < 3.0V
LSb VREF = VDD ≥ 3.0V
LSb VREF = VDD < 3.0V
LSb VREF = VDD ≥ 3.0V
LSb VREF = VDD < 3.0V
LSb VREF = VDD ≥ 3.0V
LSb VREF = VDD < 3.0V
LSb VREF = VDD ≥ 3.0V
LSb VREF = VDD < 3.0V
— VSS ≤ VAIN ≤ VREF
V
V For 10-bit resolution
A21 VREFH Reference voltage High
VSS
— VDD + 0.3V V
A22 VREFL Reference voltage Low
VSS - 0.3V —
VDD
V
A25 VAIN Analog input voltage
VSS - 0.3V — VREF + 0.3V V
A30 ZAIN Recommended impedance of
—
—
10.0
kΩ
analog voltage source
A40 IAD
A/D conversion PIC18FXX8
—
180
current (VDD) _PIC18LFXX8
—
90
—
µA Average current
—
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.
—
—
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 VDD and VSS 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.
DS41159B-page 352
Preliminary
 2002 Microchip Technology Inc.