PIC24FJ128GC010 Datasheet, PDF (375/472 Pages) Microchip Technology – 16-Bit Flash Microcontrollers with 12-Bit Pipeline A/D, Sigma-Delta A/D, USB On-The-Go and XLP Technology

PIC24FJ128GC010 FAMILY
28.0 10-BIT DIGITAL-TO-ANALOG
CONVERTER (DAC)
Note:
This data sheet summarizes the features of
this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F Family Reference Manual”,
“10-Bit Digital-to-Analog Converter
(DAC)” (DS39615). The information in this
data sheet supersedes the information in
the FRM.
PIC24FJ128GC010 family devices include two 10-bit
Digital-to-Analog Converters (DACs) for generating
analog outputs from digital data. A simplified block
diagram for a single DAC is shown in Figure 28-1. Both
of the DACs are identical.
The DAC generates an analog output voltage based on
the digital input code, according to the formula:
VDACREF  DACxDAT
VDAC =
1024
where VDAC is the analog output voltage and VDACREF
is the reference voltage selected by DACREF<1:0>.
Each DAC includes these features:
• Precision 10-bit resistor ladder for high accuracy
• Fast settling time, supporting 1 Msps effective
sampling rates
• Buffered output voltage
• Three user-selectable voltage reference options
• Multiple conversion trigger options, plus a manual
convert-on-write option
• Left and right justified input data options
• User-selectable Sleep and Idle mode operation
When using the DAC, it is required to set the ANSx and
TRISx bits for the DACx output pin to configure it as an
analog output. See Section 11.2 “Configuring Analog
Port Pins (ANSx)” for more information.
FIGURE 28-1:
SINGLE DAC SIMPLIFIED BLOCK DIAGRAM
DVREF+
AVDD
BGBUF0
2x Gain Buffer
DACSIDL
Idle Mode
DACSLP
Sleep Mode
DACREF<1:0>
DACEN
DACxCON
10
DACxDAT
CMPIF
INT1
TMR2 Trigger
TMR1 Trigger
Pipeline A/D Trigger
SD A/D Trigger
Trigger and
Interrupt Logic
DACTRIG
DACSEL<4:0>
DACxIF
10-Bit
Resistor
Ladder
Unity Gain
Buffer
AVss
DACx Output
Pin
 2012-2013 Microchip Technology Inc.
DS30009312B-page 375