Datasheet

PIC18F6585/8585/6680/8680
DS30491D-page 446  2003-2013 Microchip Technology Inc.
TABLE 27-25: A/D CONVERTER CHARACTERISTICS:
PIC18F6585/8585/6680/8680 (INDUSTRIAL, EXTENDED)
PIC18LF6585/8585/6680/8680 (INDUSTRIAL)
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
A01 NR Resolution —
—
—
—
10
TBD
bit
bit
VREF = VDD  3.0V
V
REF = VDD  3.0V
A03 E
IL Integral Linearity Error —
—
—
—
<±1
TBD
LSb
LSb
VREF = VDD  3.0V
V
REF = VDD  3.0V
A04 E
DL Differential Linearity Error —
—
—
—
<±1
TBD
LSb
LSb
VREF = VDD  3.0V
V
REF = VDD  3.0V
A05 E
FS Full-Scale Error —
—
—
—
<±1
TBD
LSb
LSb
VREF = VDD  3.0V
V
REF = VDD  3.0V
A06 E
OFF Offset Error —
—
—
—
<±1
TBD
LSb
LSb
VREF = VDD  3.0V
V
REF = VDD  3.0V
A10 — Monotonicity guaranteed
(3)
—VSS  VAIN  VREF
A20 VREF Reference Voltage
(V
REFH – VREFL)
0V — — V
A20A 3V — — V For 10-bit resolution
A21 V
REFH Reference Voltage High AVss — AVDD + 0.3V V
A22 V
REFL Reference Voltage Low AVss – 0.3V — AVDD V
A25 V
AIN Analog Input Voltage AVSS – 0.3V — VREF + 0.3V V
A30 Z
AIN Recommended Impedance of
Analog Voltage Source
— — 10.0 k
A40 I
AD A/D Conversion
Current (V
DD)
PIC18FXX8X — 180 — A Average current
consumption when
A/D is on (Note 1)
PIC18LFXX8X — 90 — A
A50 I
REF VREF Input Current (Note 2) —
—
—
—
5
150
A
A
During VAIN acquisition.
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.
V
REF current is from RA2/AN2/VREF- and RA3/AN3/VREF+ pins or AVDD and AVSS pins, whichever is
selected as reference input.
2: Vss  V
AIN  VREF
3: The A/D conversion result never decreases with an increase in the input voltage and has no missing
codes.
18F8680.book Page 446 Tuesday, January 29, 2013 1:32 PM