Datasheet

PIC12F752/HV752
DS41576B-page 110 Preliminary  2011 Microchip Technology Inc.
FIGURE 12-4: ANALOG INPUT MODEL
FIGURE 12-5: ADC TRANSFER FUNCTION
Cpin
VA
Rs
ANx
5 pF
V
DD
Vt = 0.6V
Vt = 0.6V
I leakage
Ric £ 1k
Sampling
Switch
SS
Rss
Chold = 10 pF
Vss/V
REF-
6V
Sampling Switch
5V
4V
3V
2V
567891011
(kW)
V
DD
± 500 nA
Legend: Cpin
Vt
I leakage
Ric
SS
Chold
= Input Capacitance
= Threshold Voltage
= Leakage current at the pin due to
= Interconnect Resistance
= Sampling Switch
= Sample/Hold Capacitance
various junctions
Rss
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