Texas Instruments C2000 Workshop Guide And Lab Manual

Analog-to-Digital Converter
6 - 16 C2000 Microcontroller Workshop - Analog-to-Digital Converter
ADC Reference Selection
AdcRegs.ADCREFSEL
 The internal reference has temperature stability of ~50 PPM/ ° C*
 The internal reference (default) will convert an applied input voltage
to a fixed scale of 0 to 3.3 V range
 If this is not sufficient for your application, there is the option to use
an external reference*
 External reference will scale an input voltage range from VREFLO to
VREFHI (ratiometric)
 The reference value changes the 0 - 3.3 V full-scale range of the ADC
 The ADCREFSEL in ADCCTL1 controls the reference choice
* See device datasheet for exact specifications and ADC reference hardware connections
2 - 015 - 5
ADCREFSEL
ADC Reference Selection
0 = internal (default)
1 = external VREFHI/VREFLO pins
used for reference generation
reserved
4 3

Texas Instruments C2000 Specifications

General

Brand	Texas Instruments
Model	C2000
Category	Microcontrollers
Language	English