PIC16F1938 Datasheet, PDF (170/452 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers

PIC16(L)F1938/9
FIGURE 17-1:
DIGITAL-TO-ANALOG CONVERTER BLOCK DIAGRAM
FVR BUFFER2
VDD
VREF+
DACPSS<1:0> ₂
DACEN
DACLPS
DACNSS
VREF-
VSS
Digital-to-Analog Converter (DAC)
VSOURCE+
R
R
R
R
R
32
Steps
R
R
R
5
DACR<4:0>
DAC
(To Comparator, CPS and
ADC Modules)
DACOUT
DACOE
VSOURCE-
FIGURE 17-2:
VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE
PIC^® MCU
DAC
Module
R
Voltage
Reference
Output
Impedance
DACOUT
+
–
Buffered DAC Output
DS41574A-page 170
Preliminary
 2011 Microchip Technology Inc.