PIC16F1946 Datasheet, PDF (166/440 Pages) Microchip Technology – 64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC16F/LF1946/47
FIGURE 15-4:
ANALOG INPUT MODEL
Analog
Input
Rs ^pin
VDD
VT  0.6V
RIC  1k
Sampling
Switch
SS _Rss
VA
CPIN
5 pF
VT  0.6V
I LEAKAGE⁽¹⁾
CHOLD = 10 pF
VSS/VREF-
Legend: CHOLD
CPIN
= Sample/Hold Capacitance
= Input Capacitance
I LEAKAGE = Leakage current at the pin due to
various junctions
RIC
= Interconnect Resistance
RSS
= Resistance of Sampling Switch
SS
= Sampling Switch
VT
= Threshold Voltage
Note 1: Refer to Section 29.0 “Electrical Specifications”.
6V
5V
RSS
VDD 4V
3V
2V
5 6 7 8 9 10 11
Sampling Switch
(k)
FIGURE 15-5:
ADC TRANSFER FUNCTION
3FFh
3FEh
3FDh
3FCh
3FBh
004h
003h
002h
001h
000h
VREF-
Full-Scale Range
1 LSB ideal
Zero-Scale
Transition
1 LSB ideal
Full-Scale
Transition
Analog Input Voltage
VREF+
DS41414A-page 164
Preliminary
 2010 Microchip Technology Inc.