PCM1820 datasheet(7/130 Pages) TI

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7.5 Electrical Characteristics

at TA = 25°C, AVDD = 3.3 V, IOVDD = 3.3 V, fIN = 1-kHz sinusoidal signal, fS = 48 kHz, 32-bit audio data, BCLK = 256 × fS,

TDM slave mode, and PLL on (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ADC CONFIGURATION

AC input impedance

Input pins INxP or INxM, 2.5-kΩ input impedance

selection

2.5

kΩ

Input pins INxP or INxM, 10-kΩ input impedance

selection

Input pins INxP or INxM, 20-kΩ input impednace

selection

Channel gain range

Programmable range with 0.5-dB steps

ADC PERFORMANCE FOR LINE/MICROPHONE INPUT RECORDING : AVDD 3.3-V OPERATION

Differential input full-scale

AC signal voltage

AC-coupled input

VRMS

Single-ended input full-

scale AC signal voltage

AC-coupled input

VRMS

SNR

Signal-to-noise ratio, A-

weighted(1) (2)

IN1 differential input selected and AC signal shorted

to ground, DRE enabled (DRE_LVL = –36 dB,

DRE_MAXGAIN = 24 dB), 2.5-kΩ input impedance

selection

115

122

IN1 differential input selected and AC signal shorted

to ground, DRE enabled (DRE_LVL = –36 dB,

DRE_MAXGAIN = 24 dB), 10-kΩ input impedance

selection

117

IN1 differential input selected and AC signal shorted

to ground, DRE disabled, 2.5-kΩ input impedance

selection, 0-dB channel gain

106

112

IN1 differential input selected and AC signal shorted

to ground, DRE disabled, 2.5-kΩ input impedance

selection, 12-dB channel gain

108

Dynamic range, A-

weighted(2)

IN1 differential input selected and –60-dB full-scale

AC signal input, DRE enabled (DRE_LVL = –36 dB,

DRE_MAXGAIN = 24 dB), 2.5-kΩ input impedance

selection

123

IN1 differential input selected and –60-dB full-scale

AC signal input, DRE enabled (DRE_LVL = –36 dB,

DRE_MAXGAIN = 24 dB), 10-kΩ input impedance

selection

118

IN1 differential input selected and –60-dB full-scale AC

signal input, DRE disabled, 2.5-kΩ input impedance

selection, 0-dB channel gain

113

IN1 differential input selected and –72-dB full-scale AC

signal input, DRE disabled, 2.5-kΩ input impedance

selection, 12-dB channel gain

108

THD+N

Total harmonic distortion(2)

(3)

IN1 differential input selected and –1-dB full-scale

AC signal input, DRE enabled (DRE_LVL = –36 dB,

DRE_MAXGAIN = 24 dB), 2.5-kΩ input impedance

selection

–95

–80

IN1 differential input selected and –1-dB full-scale

AC signal input, DRE enabled (DRE_LVL = –36 dB,

DRE_MAXGAIN = 24 dB), 10-kΩ input impedance

selection

–95

IN1 differential input selected and –1-dB full-scale AC

signal input, DRE disabled, 2.5-kΩ input impedance

selection, 0-dB channel gain

–95

IN1 differential input selected and –13-dB full-scale AC

signal input, DRE disabled, 2.5-kΩ input impedance

selection, 12-dB channel gain

–93

ADC PERFORMANCE FOR LINE/MICROPHONE INPUT RECORDING : AVDD 1.8-V OPERATION

Differential input full-scale

AC signal voltage

AC-coupled Input

VRMS

Single-ended input full-

scale AC signal voltage

AC-coupled Input

0.5

VRMS

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TLV320ADC6120

SBASA92A – DECEMBER 2020 – REVISED JUNE 2021

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