Microchip Technology MA160014 Data Sheet
2010-2012 Microchip Technology Inc.
DS41412F-page 309
PIC18(L)F2X/4XK22
FIGURE 17-5:
ANALOG INPUT MODEL
FIGURE 17-6:
ADC TRANSFER FUNCTION
C
PIN
VA
Rs
ANx
5 pF
V
DD
I
LEAKAGE
(1)
R
IC
1k
Sampling
Switch
SS
Rss
C
HOLD
= 13.5 pF
V
SS
/V
REF
-
2.5V
Rss (k
)
2.0V
1.5V
1.5V
.1
1
10
V
DD
Legend: C
PIN
I
LEAKAGE
R
IC
SS
C
C
HOLD
= Input Capacitance
= Leakage current at the pin due to
= Leakage current at the pin due to
= Interconnect Resistance
= Sampling Switch
= Sample/Hold Capacitance
= Sampling Switch
= Sample/Hold Capacitance
various junctions
Discharge
Switch
Switch
3.0V
3.5V
100
Note 1:
See
.
3FFh
3FEh
A
DC O
u
tput
Code
3FDh
3FCh
004h
003h
002h
001h
000h
Full-Scale
3FBh
1/2 LSB ideal
V
SS
/V
REF
-
Zero-Scale
Transition
Transition
V
DD
/V
REF
+
Transition
1/2 LSB ideal
Full-Scale Range
Analog Input Voltage