WM8758B 查看數據表（PDF） - Wolfson Microelectronics plc

零件编号

产品描述 (功能)

比赛名单

WM8758B

Stereo CODEC with Headphone Driver and Line Out

Wolfson Microelectronics plc 

Production Data

WM8758B

Test Conditions

DCVDD=1.8V, AVDD1=AVDD2=3.0V, DBVDD=3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise

stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

MIC PGA to Input Boost to OUT3/OUT4 outputs (with 10k / 50pF load)

Full-scale output voltage, 0dB

gain (Note 9)

AVDD2/3.3

Vrms

Signal to Noise Ratio (Note 5,6)

SNR

A-weighted

AVDD1=AVDD2=3.0V

A-weighted

AVDD1=AVDD2=2.5V

22Hz to 22kHz

AVDD1=AVDD2=3.0V

22Hz to 22kHz

AVDD1=AVDD2=2.5V

Total Harmonic Distortion

THD

full-scale signal

(Note 7)

AVDD1=AVDD2=3.0V

full-scale signal

AVDD1=AVDD2=2.5V

Total Harmonic Distortion + Noise THD+N

full-scale signal

(Note 7)

AVDD1=AVDD2=3.0V

full-scale signal

AVDD1=AVDD2=2.5V

Channel Separation

MIC PGA Bypass to LOUT1/ROUT1 (with 16 load)

Full-scale output voltage, 0dB

gain (Note 9)

Signal to Noise Ratio (Note 5,6)

SNR

A-weighted

AVDD1=AVDD2=3.0V

A-weighted

AVDD1=AVDD2=2.5V

22Hz to 22kHz

AVDD1=AVDD2=3.0V

22Hz to 22kHz

AVDD1=AVDD2=2.5V

Total Harmonic Distortion

THD

-5dBFS signal

(Note 7)

AVDD1=AVDD2=3.0V

-5dBFS signal

AVDD1=AVDD2=2.5V

Total Harmonic Distortion + Noise THD+N

-5dBFS signal

(Note 7)

AVDD1=AVDD2=3.0V

-5dBFS signal

AVDD1=AVDD2=2.5V

Channel separation

1kHz full scale signal

90

98

96

95.5

93.5

-84

-82

-82

-80

100

AVDD1/3.3

90

100

96

95.5

93.5

-87

-75

-69

-85

-73

-68

100

dB

dB

dB

dB

dB

dB

dB

dB

dB

Vrms

dB

dB

dB

dB

dB

dB

dB

dB

dB

w

PD, Rev 4.4, January 2012

11

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