
PIC24FV32KA304 FAMILY
DS39995C-page 208
2011-2012 Microchip Technology Inc.
FIGURE 22-1:
12-BIT A/D CONVERTER BLOCK DIAGRAM
Comparator
12-Bit SAR
VREF+
DAC
AN14
AN15
AN8
AN9
AN4
AN5
AN6
AN7
AN0
AN1
AN2
AN3
VREF-
Sample Control
S/H
AVSS
AVDD
ADC1BUF0:
ADC1BUF17
AD1CON1
AD1CON2
AD1CON3
AD1CHS
AD1CHITL
AD1CHITH
Control Logic
Data Formatting
Input MUX Control
Conversion Control
Pin Config. Control
Internal
16
VR+
VR-
MU
X
A
VINH
VINL
VINH
VINL
VR+
VR-
V
R
Se
le
ct
CTMU
VBG
AD1CSSL
AD1CSSH
AVss
0.785 * VDD
AVDD
0.215 * VDD
AD1CON5
CTMU
VBG
Temp. Sensor
Data Bus
MU
X
B
Conversion Logic