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參數資料
| 型號： | WM8739 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | STEREO AUDIO ADC |
| 中文描述： | 立體聲音頻模數轉換器 |
| 文件頁數： | 1/35頁 |
| 文件大小： | 349K |
| 代理商： | WM8739 |
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WM8739 / WM8739L
Stereo Audio ADC
WOLFSON MICROELECTRONICS LTD
www.wolfsonmicro.com
Advanced Information, September 2001, Rev 2.2
Copyright
2001 Wolfson Microelectronics Ltd
.
DESCRIPTION
The WM8739 is a stereo audio ADC. The WM8739 is
designed specifically for portable MP3 audio and speech
players and recorders. The WM8739 is also ideal for MD,
CD-RW machines and DAT recorders.
Stereo line-level audio inputs are provided, along with a
mute and volume function, and master or slave mode
clocking schemes. The device also has a programmable
high pass filter to remove residual DC offsets.
Stereo 24-bit multi-bit sigma delta ADCs are used with
oversampling digital interpolation and digital filters. Digital
audio output word lengths from 16-32 bits and sampling
rates from 8KHz to 96KHz are supported.
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 20-
pin SSOP package.
FEATURES
90dB SNR (‘A’ weighted @ 48kHz) ADC
Low Power
-
12mW all-on, 1.4mW standby (‘L’ version)
-
41mW all-on, 5.3mW standby (standard version)
Low Supply Voltages
-
1.8 – 3.6V Analogue Supply (‘L’ version)
-
2.7 – 3.6V Analogue Supply (standard version)
-
1.42 – 3.6V Digital Supply (both versions)
Input Volume and Mute Controls
ADC Sampling Frequency: 8KHz – 96KHz
Selectable ADC High Pass Filter
2 or 3-Wire MPU Serial Control Interface
Programmable Audio Data Interface Modes
-
I
2
S, Left, Right Justified or DSP
-
16/20/24/32 bit Word Lengths
-
Master or Slave Clocking Mode
20-Pin SSOP or 5x5mm QFN Package Options
APPLICATIONS
CD, Minidisc and DAT Recorders
General Purpose Audio Digitisation
BLOCK DIAGRAM
VOL/
MUTE
VOL/
MUTE
ADC
ADC
DIGITAL
FILTERS
CONTROL INTERFACE
C
S
S
RLINEIN
LLINEIN
VMID
D
D
AVDD
AGND
+12 to -34.5dB,
1.5dB Steps
+12 to -34.5dB,
1.5dB Steps
D
ADCLRC
ADCDAT
DIV2
X
X
M
D
BCLK
OSC
WM8739
相關PDF資料 |
PDF描述 |
|---|---|
| WM8739EDS | STEREO AUDIO ADC |
| WM8739LEDS | STEREO AUDIO ADC |
| WM8740 | BOX 4.38X3.25X2.51 WALL MT BLK |
| WM8746 | 24BIT 192KHZ 6 CHANNEL DAC WITH VOLUME CONTROL |
| WM8746EDS | 24BIT 192KHZ 6 CHANNEL DAC WITH VOLUME CONTROL |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM8739EDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:STEREO AUDIO ADC |
| WM8739LEDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:STEREO AUDIO ADC |
| WM8739SEDS/R | 功能描述:音頻模/數轉換器 IC Stereo ADC Low Power RoHS:否 制造商:Wolfson Microelectronics 轉換速率: 分辨率: ADC 輸入端數量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風格: 封裝 / 箱體: 封裝: |
| WM8740 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit, High Performance 192kHz Stereo DAC |
| WM8740_04 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit, High Performance 192kHz Stereo DAC |
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