Microchip Technology AC164139 Data Sheet
PIC24FJ256DA210 FAMILY
DS39969B-page 326
2010 Microchip Technology Inc.
FIGURE 23-1:
10-BIT HIGH-SPEED A/D CONVERTER BLOCK DIAGRAM
Comparator
10-Bit SAR
Conversion Logic
V
REF
+
DAC
AN23
AN0
AN1
AN2
V
REF
-
Sample Control
S/H
AV
SS
AV
DD
AD1BUF0:
AD1BUF1F
AD1CON1
AD1CON2
AD1CON3
AD1CON2
AD1CON3
AD1CHS
ANCFG
Control Logic
Data Formatting
Input MUX Control
Conversion Control
Pin Config Control
Internal Data Bus
16
V
R
+
V
R
-
MU
X
A
MU
X
B
V
INH
V
INL
V
INH
V
INH
V
INL
V
INL
V
R
+
V
R
-
V
R
Se
le
ct
V
BG
V
BG
/2
AD1CSSL
AD1CSSH
V
BG
/6
V
CAP