Datasheet

PIC16F882/883/884/886/887
DS41291G-page 112  2006-2012 Microchip Technology Inc.
FIGURE 9-4: ANALOG INPUT MODEL
FIGURE 9-5: ADC TRANSFER FUNCTION
CPIN
VA
Rs
ANx
5 pF
V
DD
VT = 0.6V
V
T = 0.6V
I
LEAKAGE
(1)
RIC  1k
Sampling
Switch
SS
Rss
C
HOLD = 10 pF
V
SS/VREF-
6V
Sampling Switch
5V
4V
3V
2V
567891011
(k)
V
DD
± 500 nA
Legend: CPIN
VT
I LEAKAGE
RIC
SS
C
HOLD
= Input Capacitance
= Threshold Voltage
= Leakage current at the pin due to
= Interconnect Resistance
= Sampling Switch
= Sample/Hold Capacitance
various junctions
RSS
Note 1: See Section 17.0 “Electrical Specifications”.
3FFh
3FEh
ADC Output Code
3FDh
3FCh
004h
003h
002h
001h
000h
Full-Scale
3FBh
1 LSB ideal
VSS/VREF-
Zero-Scale
Transition
V
DD/VREF+
Transition
1 LSB ideal
Full-Scale Range
Analog Input Voltage