參數(shù)資料
型號： WM8711L
廠商： Wolfson Microelectronics
英文描述： portable digital audio solutions
中文描述： 便攜式數(shù)字音頻解決方案
文件頁數(shù)： 1/36頁
文件大?。?/td> 379K
代理商： WM8711L
WM8711
Internet Audio DAC with Integrated Headphone Driver
Product Preview, Novembert 2000, 1.2
WOLFSON MICROELECTRONICS LTD
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
Product Preview
data sheets contain
specifications for products in the formative
phase of development. These products may
be changed or discontinued without notice.
2000 Wolfson Microelectronics Ltd
.
DESCRIPTION
The WM8711 is a low power stereo DAC with an integrated
headphone driver. The WM8711 is designed specifically for
portable MP3 audio and speech players. The WM8711 is
also ideal for MD, CD machines and DAT players.
Stereo 24-bit multi-bit sigma delta DACs are used with
oversampling digital interpolation filters. Digital audio input
word lengths from 16-32 bits and sampling rates from 8KHz
to 96KHz are supported.
Stereo audio outputs are buffered for driving headphones
from a programmable volume control, line level outputs are
also provided along with anti-thump mute and power
up/down circuitry.
The device is controlled via a 2 or 3 wire serial interface.
The interface provides access to all features including
volume controls, mutes, de-emphasis and extensive power
management facilities. The device is available in a small 28-
pin SSOP package.
A USB mode is provided where all audio rates can be
derived from a single 12MHz MCLK, saving on the need for
a PLL or multiple crystals.
FEATURES
Audio Performance
-
100dB SNR (‘A’ weighted @ 48kHz) DAC
-
1.42 – 3.6V Digital Supply Operation
-
2.7 – 3.6V Analogue Supply Operation
DAC Sampling Frequency: 8KHz – 96KHz
2 or 3-Wire MPU Serial Control Interface
Programmable Audio Data Interface Modes
-
I
S, Left, Right Justified or DSP
-
16/20/24/32 bit Word Lengths
-
Master or Slave Clocking Mode
Stereo Audio Outputs
Output Volume and Mute Controls
Highly Efficient Headphone Driver
Playback Mode Power Consumption < 18mW
28-Pin SSOP Package
APPLICATIONS
Portable MP3 Players
CD and Minidisc Players
BLOCK DIAGRAM
X
X
C
DIGITAL
FILTERS
CONTROL INTERFACE
VOL/
MUTE
VOL/
MUTE
H/P
DRIVER
H/P
DRIVER
C
(22)
S
(23)
S
(24)
(10) RHPOUT
(9) LHPOUT
(13) ROUT
(12) LOUT
D
(
D
+6 to -73dB
1 dB Steps
(8) HPVDD
(11) HPGND
+6 to -73dB
1 dB Steps
D
(
M
(21)
D
DACLRC (5)
BCLK (3)
DACDAT (4)
A
(14)
A
(15)
V
(16)
Σ
Σ
MUTE
MUTE
DAC
DAC
(20) LLINEIN
(19) RLINEIN
OSC
CLKIN
DIVIDER
(Div x1, x2)
CLKIN
DIVIDER
(Div x1, x2)
WM8711
(26)
(25)
(2)
(27)
(1)
(28)
相關PDF資料
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相關代理商/技術參數(shù)
參數(shù)描述
WM8711L_11 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Internet Audio DAC with Integrated Headphone Amplifier
WM8711LEDS 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:portable digital audio solutions
WM8711LGEFL 功能描述:音頻數(shù)/模轉換器 IC Stereo DAC with H/P Line-In RoHS:否 制造商:Texas Instruments 轉換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
WM8711LGEFL/R 功能描述:音頻數(shù)/模轉換器 IC Stereo DAC with H/P Line-In RoHS:否 制造商:Texas Instruments 轉換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
WM8711SEDS 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Internet Audio DAC with Integrated Headphone Amplifier
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