TM4C123GE6PM Datasheet, PDF (808/1408 Pages) Texas Instruments – Tiva™ TM4C123GE6PM Microcontroller

Analog-to-Digital Converter (ADC)
Figure 13-8. ADC Voltage Reference
VDDA
VDDA
VREFP
GNDA
VREFN
GNDA
ADC
The range of this conversion value is from 0x000 to 0xFFF. In single-ended-input mode, the 0x000
value corresponds to the voltage level on VREFN; the 0xFFF value corresponds to the voltage level
on VREFP. This configuration results in a resolution that can be calculated using the following
equation:
mV per ADC code = (VREFP - VREFN) / 4096
While the analog input pads can handle voltages beyond this range, the analog input voltages must
remain within the limits prescribed by Table 24-33 on page 1388 to produce accurate results. Figure
13-9 on page 809 shows the ADC conversion function of the analog inputs.
808
June 12, 2014
Texas Instruments-Production Data