Datasheet > WM8722

WM8722

更新时间： 2024-11-21 22:35:43

品牌	Logo	应用领域
欧胜 - WOLFSON		/
页数	文件大小	规格书
23页	438K
描述
Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs

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WM8722 数据手册

WM8722

Stereo DAC with Integrated Tone Generator and

Line/Variable Level Outputs

Advanced Information, May 2000, Rev 1.5

DESCRIPTION

FEATURES

•

Performance

The WM8722 is a high performance stereo DAC designed

for audio applications such as digital TV and set top boxes.

The WM8722 has two stereo analogue outputs, one at line

level and one that includes a digitally controllable mute and

attenuator function. An on-board tone generator can be

routed through the line or variable outputs.

−

102dB SNR (‘A’ weighted @48kHz)

THD+N: -90dB @ F.S.

5V or 3V supply operation

Sampling frequency: 8kHz – 96kHz

•

3-wire or 2-wire serial MPU compatible interface for

WM8722 supports data input word lengths from 16-24 bits

and sampling rates up to 96kHz. The WM8722 consists of a

serial interface port, digital interpolation filter, multi-bit sigma

delta modulator and stereo DAC in a small 20-pin SSOP

package.

−

Input data word; 16/20/24-Bit

Soft mute

De-emphasis

Volume control

•

On-board tone generator (1Hz – 32kHz, 0.1 – 25.5s)

Stereo analogue inputs

The 3 or 2-wire serial MPU compatible control port provides

access to all features including tone generation, on-chip

mute, attenuation and phase reversal.

20-pin SSOP package

The programmable data input port supports glueless

interfaces to popular DSPs, audio decoders and S/PDIF

and AES/EBU receivers.

APPLICATIONS

•

Digital TV

Digital broadcast receivers

Set top boxes

BLOCK DIAGRAM

MXINL(14)

+12 to -34.5dB, 1.5dB Steps

MONO ATTENUATION CONTROL

0/-6dB

(13)LINEOUTL

(12) VAROUTL

I2S/SDIF

MULTI

BIT

DIN (17)

BCKIN (19)

LRCIN (18)

SCKI (20)

DIGITAL

ATTENUATOR

AND

MULTI

BIT ∑∆

16,18, 20

OR 24 BITS

FILTERS

DAC

L Mix Switches (0-9)

R Mix Switches (0-9)

+6 to -73dB,

1dB Steps

0/-6dB

MD (3)

MC (2)

(9) VAROUTR

(8) LINEOUTR

MULTI

BIT

DIGITAL

ATTENUATOR

AND

SERIAL

INPUT

INTERFACE

MULTI

BIT ∑∆

LATCH (4)

BUSY (5)

0/-6dB

FILTERS

DAC

TONE

GENERATOR

TONE

DAC

TCLK (1)

0 TO -46.5dB, 1.5dB

STEPS

WM8722

+12 TO -34.5dB, 1.5dB

STEPS

(16)

(6)

(10)

(15)

CAP

(11)

AVDD MXINR

(7)

DVDD DGND AGND

WOLFSON MICROELECTRONICS LTD

Advanced Information data sheets contain

preliminary data on new products in the

preproduction phase of development.

Supplementary data will be published at a

later date.

Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK

Tel: +44 (0) 131 667 9386

Fax: +44 (0) 131 667 5176

Email: sales@wolfson.co.uk

http://www.wolfson.co.uk

2000 Wolfson Microelectronics Ltd.

12 3 4 5 6 7...23

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与WM8722相关器件

型号	品牌	获取价格	描述	数据表
WM8722_01	WOLFSON	获取价格	Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs
WM8722XWM8722EDS	WOLFSON	获取价格	Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs
WM8725	WOLFSON	获取价格	99dB Stereo DAC
WM8725_04	WOLFSON	获取价格	99dB Stereo DAC
WM8725_12	WOLFSON	获取价格	99dB Stereo DAC
WM8725CGED	WOLFSON	获取价格	99dB Stereo DAC
WM8725CGED/R	WOLFSON	获取价格	99dB Stereo DAC
WM8725ED	WOLFSON	获取价格	99dB Stereo DAC
WM8725ED/R	WOLFSON	获取价格	99dB Stereo DAC
WM8725GED/RV	WOLFSON	获取价格	99dB Stereo DAC

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