Information

PIC18F87K22 FAMILY
DS80000507F-page 10  2010-2013 Microchip Technology Inc.
Data Sheet Clarifications
The following typographic corrections and clarifications
are to be noted for the latest version of the device data
sheet (DS39960D):
1. Module: Electrical Characteristics
Table 31-27: A/D Converter Characteristics has
been corrected. The changes are shown in bold
in the table below:
TABLE 31-27: A/D CONVERTER CHARACTERISTICS: PIC18F87K22 FAMILY (INDUSTRIAL)
Note: Corrections are shown in bold. Where
possible, the original bold text formatting
has been removed for clarity.
Param.
No.
Sym. Characteristic Min. Typ. Max. Units Conditions
A01 N
R Resolution — — 12 bit VREF  5.0V
A03 EIL Integral Linearity Error — ±1 ±6.0 LSB VREF  5.0V
A04 E
DL Differential Linearity Error — ±1 +3.0/-1.0 LSB VREF  5.0V
A06 EOFF Offset Error — ±1 ±18.0 LSB VREF  5.0V
A07 EGN Gain Error — ±1 ±8.0 LSB VREF  5.0V
A10 — Monotonicity
(1)
—— ——VSS  VAIN  VREF
A20 VREF Reference Voltage Range
(V
REFH – VREFL)
3—V
DD – VSS V
A21 V
REFH Reference Voltage High VSS + 3.0V — VDD + 0.3V V
A22 VREFL Reference Voltage Low VSS – 0.3V — VDD – 3.0V V
A25 VAIN Analog Input Voltage VREFL —VREFH V
A30 Z
AIN Recommended
Impedance of Analog
Voltage Source
—— 2.5k
A50 I
REF VREF Input Current
(2)
—
—
—
—
5
150
A
A
During VAIN acquisition.
During A/D conversion cycle.
Note 1: The A/D conversion result never decreases with an increase in the input voltage.
2: VREFH current is from the RA3/AN3/VREF+ pin or VDD, whichever is selected as the VREFH source. VREFL
current is from the RA2/AN2/V
REF-/CVREF pin or VSS, whichever is selected as the VREFL source.