XWM8739SEDS/V Ver la hoja de datos (PDF) - Cirrus Logic

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componentes Descripción

Fabricante

XWM8739SEDS/V

Stereo Audio ADC

Cirrus Logic 

WM8739

Production Data

ELECTRICAL CHARACTERISTICS – WM8739

Test Conditions

AVDD, DBVDD = 3.3V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, TA = +25oC, Slave Mode, fs = 48kHz, XTI/MCLK = 256fs

unless otherwise stated.

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

UNIT

Digital Logic Levels (CMOS Levels)

Input LOW level

VIL

Input HIGH level

VIH

Output LOW

VOL

Output HIGH

VOH

0.7 x VDD

0.9 x VDD

0.3 x VDD

V

V

0.1 x VDD

V

V

Analogue Reference Levels

Reference voltage

VVMID

Potential divider resistance

RVMID

Power On Reset Threshold (DCVDD)

AVDD/2

V

50K

Ω

DCVDD Threshold On -> Off

Vth

0.9

V

Hysteresis

VIH

DCVDD Threshold Off -> On

VOL

0.3

V

0.6

V

Input to ADC

Input Signal Level (0dB)

VINLINE

1.0

AVDD/3.3

Vrms

Signal to Noise Ratio (Note 1,2)

SNR

A-weighted, 0dB gain,

85

90

dB

fs = 48kHz

A-weighted, 0dB gain,

90

fs = 96kHz

A-weighted, 0dB gain,

88

fs = 48kHz,

AVDD = 2.7V

Dynamic Range (Note 2)

DR

A-weighted, -60dB full

85

90

dB

scale input

Total Harmonic Distortion

THD

-1dB input, 0dB gain

-84

-74

dB

0.006

0.02

%

Power Supply Rejection Ratio

PSRR

1kHz, 100mVpp

50

dB

20Hz to 20kHz

45

100mVpp

ADC channel separation

1kHz input

90

dB

Programmable Gain

1kHz input

-34.5

0

+12

dB

Rsource < 50Ω

Programmable Gain Step Size

Guaranteed Monotonic

1.5

dB

Mute attenuation

0dB, 1kHz input

80

dB

Input Resistance

RINLINE

0dB gain

20k

30k

Ω

12dB gain

10k

15k

Input Capacitance

CINLINE

10

pF

w

PD, Rev 4.2, July 2008

6

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