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參數資料
| 型號： | WM8740 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | BOX 4.38X3.25X2.51 WALL MT BLK |
| 中文描述： | 24位高性能192kHz的立體聲DAC |
| 文件頁數： | 1/20頁 |
| 文件大小： | 344K |
| 代理商： | WM8740 |
WM8740
24-bit, High Performance 192kHz Stereo DAC
Advanced Information, July 2000, Rev 1.7
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
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.
2000 Wolfson Microelectronics Ltd
.
DESCRIPTION
The WM8740 is a very high performance stereo DAC
designed for audio applications such as CD, DVD, home
theatre systems, set top boxes and digital TV. The WM8740
supports data input word lengths from 16 to 24-bits and
sampling rates up to 192kHz. The WM8740 consists of a
serial interface port, digital interpolation filter, multi-bit sigma
delta modulator and stereo DAC in a small 28-pin SSOP
package. The WM8740 also includes a digitally controllable
mute and attenuator function on each channel.
The internal digital filter has two selectable roll-off
characteristics. A sharp or slow roll-off can be selected
dependent on application requirements. Additionally, the
internal digital filter can be by-passed and the WM8740
used with an external digital filter.
The WM8740 supports two connection schemes for audio
DAC control. The SPI-compatible serial control port
provides access to a wide range of features including on-
chip mute, attenuation and phase reversal. A hardware
controllable interface is also available.
FEATURES
120dB SNR (‘A’ weighted mono @48kHz), THD+N: -104dB
@ FS
117dB SNR (‘A’ weighted stereo @48kHz), THD+N: -104dB
@ FS
Sampling frequency: 8kHz to 192kHz
Selectable digital filter roll-off
Optional interface to industry standard external filters
Differential mono mode needing no glue logic
Input data word: 16 to 24-bit
Hardware or SPI compatible serial port control modes:
Hardware mode: mute, de-emphasis, audio format
control
Serial mode: mute, de-emphasis, attenuation (256
steps), phase reversal
Fully differential voltage outputs
APPLICATIONS
CD, DVD audio
Home theatre systems
Professional audio systems
BLOCK DIAGRAM
SERIAL
INTERFACE
MUTE/
ATTEN
CONTROL INTERFACE
BCKIN (3)
(12) VOUTRP
SIGMA
DELTA
MODULATOR
LRCIN (1)
DIN (2)
AGNDR
(10)
AVDDR
(9)
MUTE/
ATTEN
SIGMA
DELTA
MODULATOR
DIGITAL
FILTERS
MODE8X
(4)
MUX
(8)
DVDD
(15)
AVDD
(14)
AGND
(7)
DGND
MUTEB
(25)
DIFFHW
(6)
MD/DM0
(26)
MC/DM1
(27)
ML/I2S
(28)
MODE
(24)
CSBIWO
(23)
RSTB
(22)
ZERO
(21)
LOW
PASS
FILTER
LOW
PASS
FILTER
(11) VMIDR
MUX
(18) VMIDL
RIGHT
DAC
LEFT
DAC
(19)
AGNDL
(20)
AVDDL
.
WM8740
SCLK (5)
(16) VOUTLN
(13) VOUTRN
(17) VOUTLP
相關PDF資料 |
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|---|---|
| WM8746 | 24BIT 192KHZ 6 CHANNEL DAC WITH VOLUME CONTROL |
| WM8746EDS | 24BIT 192KHZ 6 CHANNEL DAC WITH VOLUME CONTROL |
| WM8750LEFL | STEREO CODEC FOR PORTABLE AUDIO APPLICATIONS |
| WM8750L | BOX 5.63X3.25X1.51 9V BLK |
| WM8750LSEFL | BOX 5.63X3.25X1.51 9V GRY |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM8740_04 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit, High Performance 192kHz Stereo DAC |
| WM8740_10 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit, High Performance 192kHz Stereo DAC |
| WM8740-6054-DS28-EV1 | 功能描述:音頻 IC 開發工具 Eval Board for WM8740 RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| WM8740EDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit, High Performance 192kHz Stereo DAC |
| WM8740SEDS | 功能描述:音頻數/模轉換器 IC Stereo DAC High End RoHS:否 制造商:Texas Instruments 轉換器數量: 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 |
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