TMS320F28375DPZP datasheet(101/226 Pages) TI

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8.10.1.1.1 Signal Mode

The ADC supports two signal modes: single-ended and differential. In single-ended mode, the input voltage to

the converter is sampled through a single pin (ADCINx), referenced to VREFLO. In differential signaling mode,

the input voltage to the converter is sampled through a pair of input pins, one of which is the positive input

(ADCINxP) and the other is the negative input (ADCINxN). The actual input voltage is the difference between the

two (ADCINxP – ADCINxN). Figure 8-31 shows the differential signaling mode. Figure 8-32 shows the single-

ended signaling mode.

VREFHI

VREFLO

(VSSA)

VREFHI/2

Pin Voltages

ADCINxP

ADCINxN

ADC

ADCINxN

ADCINxP

VREFLO

VREFHI

VREFLO

(VSSA)

Input Common Mode

VREFHI/2 ± 50mV

Vin Common Mode

+VREFHI

-VREFHI

Effective Input Voltage

ADC Vin

n - 1

Digital Output

ADC Vin

Figure 8-31. Differential Signaling Mode

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TMS320F28379D, TMS320F28379D-Q1, TMS320F28378D, TMS320F28377D

TMS320F28377D-Q1, TMS320F28376D, TMS320F28375D, TMS320F28374D

SPRS880O – DECEMBER 2013 – REVISED FEBRUARY 2021

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TMS320F28377D-Q1 TMS320F28376D TMS320F28375D TMS320F28374D

TMS320F28375DPZP Datasheet(PDF) 101 Page - Texas Instruments