WM8956CGEFLSLASHV datasheet(1/80 Pages) WOLFSON

номер детали	WM8956CGEFL/V

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

PDF	80 Pages

Scroll/Zoom	100%

производитель	WOLFSON [Wolfson Microelectronics plc]

домашняя страница	http://www.wolfsonmicro.com

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WM8956

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

Headphone Drivers

WOLFSON MICROELECTRONICS plc

To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews

Production Data, November 2011, Rev 4.1

Copyright

2011 Wolfson Microelectronics plc

DESCRIPTION

The WM8956 is a low power, high quality stereo DAC designed

for portable multimedia applications.

Stereo class D speaker drivers provide 1W per channel into 8



loads with a 5V supply. Low leakage, excellent PSRR and

pop/click suppression mechanisms also allow direct battery

connection to the speaker supply. Flexible speaker boost

settings allow speaker output power to be maximised while

minimising other analogue supply currents.

A highly flexible input configuration for up to three stereo

sources is integrated, with a complete microphone interface.

External component requirements are drastically reduced as no

separate microphone, speaker or headphone amplifiers are

required.

Stereo 24-bit sigma-delta DACs are used with low power over-

sampling digital interpolation filters and a flexible digital audio

interface.

The master clock can be input directly or generated internally by

an onboard PLL, supporting most commonly-used clocking

schemes.

The WM8956 operates at analogue supply voltages down to

2.7V, although the digital supplies can operate at voltages down

to 1.71V to save power. The speaker supply can operate at up

to 5.5V, providing 1W per channel into 8

 loads. Unused

functions can be disabled using software control to save power.

The WM8956 is supplied in a very small and thin 5x5mm QFN

package, ideal for use in hand-held and portable systems.

FEATURES



DAC SNR 99dB (‘A’ weighted), THD -87dB at 48kHz, 3.3V



Pop and click suppression



3D Enhancement



Stereo Class D Speaker Driver

-

<0.1% THD with 1W per channel into 8

 BTL speakers

-

70dB PSRR @217Hz

-

87% efficiency (1W output)

-

Flexible internal switching clock



On-chip Headphone Driver

-

40mW output power into 16

 at 3.3V

-

Capless mode support

-

THD+N -70dB at 20mW, SNR 99dB with 16

 load



Microphone Interface

-

Pseudo differential for high noise immunity

-

Integrated low noise MICBIAS



Low Power Consumption

-

16mW headphone playback (2.7V / 1.8V supplies)



Low Supply Voltages

-

Analogue 2.7V to 3.6V (Speaker supply up to 5.5V)

-

Digital core and I/O: 1.71V to 3.6V



On-chip PLL provides flexible clocking scheme



Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48



5x5x0.9mm QFN package

APPLICATIONS



Mobile multimedia



Portable media / DVD players



Games consoles

CONTROL

INTERFACE

MICBIAS

DCVDD

DBVDD

DGND

DAC

-73 to 6dB

1dB steps,

mute

HP_L

HP_R

DACREF

50K

DAC

DIGITAL AUDIO

INTERFACE

A-law and u-law support

PLL

LINPUT2

LINPUT1

LEFT

MIXER

RIGHT

MIXER

RINPUT1

-17.25 to +30dB,

0.75dB steps

INPUT

PGAs

OUT3

LINPUT3/

JD2

RINPUT3/

JD3

0, 13, 20, 29dB, mute

+

-

vmid

+

-12 -> 6dB,

3dB steps,

mute

-17.25 to +30dB,

0.75dB steps

0, 13, 20, 29dB, mute

+

-

vmid

+

-12 -> 6dB,

3dB steps,

mute

RINPUT2

SPK_LP

SPK_LN

SPK_RP

SPK_RN

SPKGND1

SPKVDD1

MONO

MIXER

0 to -21dB,

3dB steps

0 to -21dB,

3dB steps

0 to -21dB,

3dB steps

0 to -21dB,

3dB steps

-73 to 6dB

1dB steps,

mute

0dB / -6dB

-73 to 6dB

1dB steps,

mute

+BOOST

CLASS D

-73 to 6dB

1dB steps,

mute

+BOOST

DAC DIGITAL FILTERS

DE-EMPHASIS

3D ENHANCE

VOLUME

-12 -> 6dB,

3dB steps,

mute

-12 -> 6dB,

3dB steps,

mute

Jack Detect

GPIO1

SPKGND2

SPKVDD2

W

WM8956

Аналогичный номер детали - WM8956CGEFL/V

производитель	номер детали	датащи	подробное описание детали
Wolfson Microelectronic...	WM8956	75Kb / 2P	Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers
Wolfson Microelectronic...	WM8956	1Mb / 80P	Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers
Cirrus Logic	WM8956	1Mb / 80P	Hi-Fi DAC with 1W Stereo Class D Speaker Drivers
Wolfson Microelectronic...	WM8956GEFL	1Mb / 80P	Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers
Wolfson Microelectronic...	WM8956GEFL/RV	1Mb / 80P	Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers

More results

Аналогичное описание - WM8956CGEFL/V

производитель	номер детали	датащи	подробное описание детали
Wolfson Microelectronic...	WM8956	75Kb / 2P	Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers
	WM8960	1Mb / 88P	Stereo CODEC with 1W Stereo Class D Speaker Drivers and Headphone Drivers for Portable Audio Applications
	WM8956	1Mb / 80P	Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers
Rohm	BH7884EFV	364Kb / 11P	1W1W Stereo Speaker / Headphone Amplifier
Wolfson Microelectronic...	WM8960	1Mb / 91P	Stereo CODEC with 1W Stereo Class D Speaker Drivers and Headphone Drivers for Portable Audio Applications
	WM8961	1Mb / 116P	Ultra-Low Power Stereo CODEC with 1W Stereo Class D Speaker Drivers and Ground Referenced Headphone Drivers
	WM8960	1Mb / 92P	Stereo CODEC with 1W Stereo Class D Speaker Drivers and Headphone Drivers for Portable Audio Applications
	WM8962	5Mb / 295P	Ultra-Low Power Stereo CODEC with Audio Enhancement DSP, 1W Stereo Class D Speaker Drivers and Ground Referenced Headphone Drivers
	WM8962B	5Mb / 295P	Ultra-Low Power Stereo CODEC with Audio Enhancement DSP, 1W Stereo Class D Speaker Drivers and Ground Referenced Headphone Drivers
Cirrus Logic	WM8956	1Mb / 80P	Hi-Fi DAC with 1W Stereo Class D Speaker Drivers

More results

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