PIC18F2682 Datasheet, PDF (453/484 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with ECAN Technology, 10-Bit A/D and nanoWatt Technology

PIC18F2682/2685/4682/4685
TABLE 27-24: A/D CONVERTER CHARACTERISTICS: PIC18F2682/2685/4682/4685 (INDUSTRIAL)
PIC18LF2682/2685/4682/4685 (INDUSTRIAL)
Param
No.
Sym
Characteristic
Min
Typ
Max Units
Conditions
A01 NR Resolution
—
—
10
bit ΔVREF ≥ 3.0V
A03 EIL Integral Linearity Error
—
—
<±1
LSb ΔVREF ≥ 3.0V
A04 EDL Differential Linearity Error
—
—
<±1
LSb ΔVREF ≥ 3.0V
A06 EOFF Offset Error
—
—
<±1
LSb ΔVREF ≥ 3.0V
A07 EGN Gain Error
A10 —
Monotonicity
—
—
<±1
Guaranteed⁽¹⁾
LSb ΔVREF ≥ 3.0V
—
A20 ΔVREF Reference Voltage Range
(VREFH – VREFL)
3
— AVDD – AVSS V For 10-bit resolution
A21 VREFH Reference Voltage High
AVSS + 3.0V — AVDD + 0.3V V For 10-bit resolution
A22 VREFL Reference Voltage Low
AVSS – 0.3V — AVDD – 3.0V V For 10-bit resolution
A25 VAIN Analog Input Voltage
VREFL
—
VREFH
V
A28 AVDD Analog Supply Voltage
VDD – 0.3 —
VDD + 0.3 V
A29 AVSS Analog Supply Voltage
VSS – 0.3
—
VSS + 0.3 V
A30 ZAIN Recommended Impedance of
—
—
2.5
kΩ
Analog Voltage Source
A40 IAD A/D Conversion PIC18FXXXX
—
180
Current (VDD)
—
μA Average current
consumption when
A/D is on (Note 2)
PIC18LFXXXX
—
90
—
μA VDD = 2.0V;
average current
consumption when
A/D is on (Note 2)
A50 IREF VREF Input Current (Note 3)
—
—
±5
μA During VAIN acquisition.
—
—
±150
μA During A/D conversion
cycle.
Note 1: The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
2: 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.
3: VREFH current is from RA3/AN3/VREF+ pin or AVDD, whichever is selected as the VREFH source.
VREFL current is from RA2/AN2/VREF- pin or AVSS, whichever is selected as the VREFL source.
© 2007 Microchip Technology Inc.
Preliminary
DS39761B-page 451