Datasheet

MCP19111
DS22331A-page 130  2013 Microchip Technology Inc.
FIGURE 22-4: ANALOG INPUT MODEL
FIGURE 22-5: ADC TRANSFER FUNCTION
C
PIN
VA
R
S
Analog
5pF
V
DD
V
T
 0.6V
V
T
 0.6V
I
LEAKAGE
(1)
R
IC
 1k
Sampling
Switch
SS
R
SS
C
HOLD
= 10 pF
V
SS
/V
REF
-
6V
Sampling Switch
5V
4V
3V
2V
567891011
(k)
V
DD
R
SS
Input
pin
Legend:
Note 1: Refer to Section 5.0 “Digital Electrical Characteristics”.
C
HOLD
= Sample/Hold Capacitance
C
PIN
= Input Capacitance
I
LEAKAGE
= Leakage current at the pin due to various junctions
R
IC
= Interconnect Resistance
R
SS
= Resistance of Sampling Switch
SS = Sampling Switch
V
T
= Threshold Voltage
3FFh
3FEh
ADC Output Code
3FDh
3FCh
03h
02h
01h
00h
Full-Scale
3FBh
0.5 LSB
V
REF
-
Zero-Scale
Transition
V
REF
+
Transition
1.5 LSB
Full-Scale Range
Analog Input Voltage