PIC18F47J53 Datasheet, PDF (551/586 Pages) Microchip Technology – 28/44-Pin, High-Performance USB Microcontrollers with nanoWatt XLP Technology

PIC18F47J53 FAMILY
TABLE 31-30: A/D CONVERTER CHARACTERISTICS: PIC18F47J53 FAMILY (INDUSTRIAL)
Param
No.
Symbol
Characteristic
Min
Typ
Max Units
Conditions
A01 NR
Resolution
—
—
12
bit VREF  3.0V
A03 EIL
Integral Linearity Error
—
<±1
±2
LSb VREF  3.0V
A04 EDL Differential Linearity Error
—
<±1
1.5
LSb VREF  3.0V
A06 EOFF Offset Error
—
<±1
5
LSb VREF  3.0V
A07 EGN
A10
Gain Error
Monotonicity
—
—
<±3.5
Guaranteed⁽¹⁾
LSb VREF  3.0V
— VSS  VAIN  VREF
A20 VREF Reference Voltage Range
(VREFH – VREFL)
2.0
—
3
—
—
V VDD  3.0V
—
V VDD  3.0V
A21 VREFH Reference Voltage High
For 10-bit resolution
For 12-bit resolution
VREFL
VSS + 3V
— VDD + 0.3V V
— VDD + 0.3V V
A22 VREFL Reference Voltage Low
For 10-bit resolution
For 12-bit resolution
VSS – 0.3V —
VSS – 0.3V —
VREFH
V
VDD - 3V
V
A25 VAIN Analog Input Voltage
VREFL
—
VREFH
V
A30 ZAIN Recommended Impedance of
Analog Voltage Source
For 10-bit resolution
—
—
10
k
For 12-bit resolution
—
—
2.5
k
A50 IREF VREF Input Current⁽²⁾
—
—
5
A During VAIN acquisition.
—
—
150
A 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: VREFH current is from RA3/AN3/VREF+/C1INB pin or VDD, whichever is selected as the VREFH source.
VREFL current is from RA2/AN2/VREF-/CVREF/C2INB pin or VSS, whichever is selected as the VREFL source.
FIGURE 31-22: A/D CONVERSION TIMING
BSF ADCON0, GO
(Note 2)
131
Q4
130
A/D CLK
132
A/D DATA
9
8
7
...
...
2
1
0
ADRES
ADIF
GO
SAMPLE
OLD_DATA
SAMPLING STOPPED
NEW_DATA
TCY (Note 1)
DONE
Note 1: If the A/D clock source is selected as RC, a time of TCY is added before the A/D clock starts.
This allows the SLEEP instruction to be executed.
2: This is a minimal RC delay (typically 100 ns), which also disconnects the holding capacitor from the analog input.
 2010 Microchip Technology Inc.
Preliminary
DS39964B-page 551