WM8956GEFL(2007) Ver la hoja de datos (PDF) - Wolfson Microelectronics plc

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componentes Descripción

Fabricante

WM8956GEFL
(Rev.:2007)

Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers

Wolfson Microelectronics plc 

Preliminary Technical Data

WM8956

Test Conditions

DCVDD = 1.8V, DBVDD = 3.3V, AVDD = SPKVDD1 = SPKVDD2 = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, PGA gain =

0dB, 24-bit audio data unless otherwise stated.

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

UNIT

Analogue Inputs (LINPUT1/2 Differential, RINPUT1/2 Differential) to Line-Out (HP_L, HP_R, OUT3 with 10kΩ / 50pF load)

Signal to Noise Ratio

SNR

AVDD = 3.3V

99

dB

(A-weighted)

AVDD = 2.7V

99

Total Harmonic Distortion Plus

THD+N Full Scale Input Signal,

-93

dB

Noise

AVDD = 3.3V

0.002

%

Full Scale Input Signal,

-94

AVDD = 2.7V

0.002

Analogue Inputs (LINPUT2, RINPUT2) via Boost to Line-Out (HP_L, HP_R, OUT3 with 10kΩ / 50pF load)

Signal to Noise Ratio

SNR

AVDD = 3.3V

102

dB

(A-weighted)

AVDD = 2.7V

102

Total Harmonic Distortion Plus

THD+N Full Scale Input Signal,

-93

dB

Noise

AVDD = 3.3V

0.002

%

Full Scale Input Signal,

-94

AVDD = 2.7V

0.002

Analogue Inputs (LINPUT3, RINPUT3) via Bypass to Line-Out (HP_L, HP_R, OUT3 with 10kΩ / 50pF load)

Signal to Noise Ratio

SNR

AVDD = 3.3V

104

dB

(A-weighted)

AVDD = 2.7V

104

Total Harmonic Distortion Plus

THD+N Full Scale Input Signal,

-96

dB

Noise

AVDD = 3.3V

0.002

%

Full Scale Input Signal,

-97

AVDD = 2.7V

0.001

Analogue Inputs (LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3) to Line-Out (HP_L, HP_R, OUT3 with

10kΩ / 50pF load)

Channel Separation

1kHz full scale signal to

98

dB

HP_L/R outputs via

L/RINPUT1, MIC amp

(single-ended) and boost

1kHz full scale signal to

90

dB

HP_L/R outputs via

L/RINPUT2 and boost

1kHz full scale to HP_L/R

96

dB

outputs via L/RINPUT3

and boost

Boost / Bypass Separation

1kHz on

90

dB

(Quiescent LINPUT3/RINPUT3

to HP outputs via bypass)

LINPUT2/RINPUT2 to

input boost mixer via MIC

PGA

1kHz on

90

dB

LINPUT1/RINPUT1 to

input boost mixer via MIC

PGA

Channel Matching

1kHz signal

0.2

dB

w

PTD, July 2007, Rev 2.1

7

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