PCM5310PAPR datasheet(17/103 Pages) TI

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DETAILED DESCRIPTION

ANALOG INPUTS

PGA-AD2L

PGA-AD1L

PGA-AD1R

PGA-AD2R

ADC-1L

ADC-1R

ADC-2L

ADC-2R

AIN1L

AIN2L

AIN3L

AIN4L

AIN5L

AIN6L

AIN1R

AIN2R

AIN3R

AIN4R

AIN5R

AIN6R

PCM5310

www.ti.com ............................................................................................................................................................................................ SLES244 – FEBRUARY 2009

The PCM5310 includes a four-channel analog-to-digital converter (ADC) with a programmable gain amplifier

(PGA) and six stereo analog inputs with a 2-VRMS input. Pins AIN1L/1R to AIN6L/6R are connected to the ADC

left (L) or right (R) channel through the analog multiplexer (mux) and PGA, as shown in Figure 28. If the analog

input voltage level is less than 2 VRMS, it can be amplified by using the PGA. The gain level can be set to 9 dB,

6 dB, or 3 dB. The descriptions for the analog input registers are shown in Table 1.

Figure 28. Analog Inputs

Table 1. Analog Input Registers

Analog input mux selection for ADC1L/1R

AX1R[2:0], AX1L[2:0]

Analog input mux selection for ADC2L/2R

AX2R[2:0], AX2L[2:0]

Analog input gain control for ADC1L/1RW

AG1R[1:0], AG1L[1:0]

Analog input gain control for ADC2L/2R

AG2R[1:0], AG2L[1:0]

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