Datasheet

 1999-2013 Microchip Technology Inc. DS39026D-page 261
PIC18CXX2
TABLE 21-21: A/D CONVERTER CHARACTERISTICS: PIC18CXX2 (INDUSTRIAL, EXTENDED)
PIC18LCXX2 (INDUSTRIAL)
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
A01 N
R Resolution —
—
—
—
10
10
bit
bit
VREF = VDD  3.0V
V
REF = VDD  3.0V
A03 E
IL Integral linearity error —
—
—
—
<±1
<±2
LSb
LSb
VREF = VDD  3.0V
V
REF = VDD  3.0V
A04 EDL Differential linearity error —
—
—
—
<±1
<±2
LSb
LSb
VREF = VDD  3.0V
V
REF = VDD  3.0V
A05 EFS Full scale error —
—
—
—
<±1
<±1
LSb
LSb
VREF = VDD  3.0V
V
REF = VDD  3.0V
A06 E
OFF Offset error —
—
—
—
<±1
<±1
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 VREFH Reference voltage High AVSS —AVDD + 0.3V V
A22 VREFL 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
——10.0k
A40 I
AD A/D conversion
current (V
DD)
PIC18CXXX — 180 — A Average current
consumption when
A/D is on (Note 1).
PIC18LCXXX — 90 — A
A50 I
REF VREF input current (Note 2) 10
—
—
—
1000
10
A
A
During VAIN acquisition.
Based on differential of
VHOLD to VAIN. To charge
C
HOLD, see Section 16.0.
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: V
SS  VAIN  VREF
3: The A/D conversion result never decreases with an increase in the Input Voltage, and has no missing codes.