- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361880 > WM8718 (Wolfson Microelectronics) 24 BIT DIFFERENTIAL STEREO DAC WITH VOLUME CONTROL PDF資料下載
參數(shù)資料
| 型號： | WM8718 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 24 BIT DIFFERENTIAL STEREO DAC WITH VOLUME CONTROL |
| 中文描述： | 24位差分立體聲DAC，具有音量控制 |
| 文件頁數(shù)： | 16/27頁 |
| 文件大?。?/td> | 284K |
| 代理商： | WM8718 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當(dāng)前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁
WM8718
Production Data
w
PD Rev 4.1 March 2004
16
ATTENUATION CONTROL
Each DAC channel can be attenuated digitally before being applied to the digital filter.
Attenuation is 0dB by default but can be set between 0 and 127.5dB in 0.5dB steps using the 8
Attenuation control bits. All attenuation registers are double latched allowing new values to be
pre-latched to both channels before being updated synchronously. Setting the UPDATE bit on
any attenuation write will cause all pre-latched values to be immediately applied to the DAC
channels.
REGISTER
ADDRESS
0000
Attenuation
DACL
BITS
LABEL
DEFAULT
DESCRIPTION
[7:0]
LAT[7:0]
11111111 (0dB)
Attenuation data for Left Channel DACL in 0.5dB steps.
8
UPDATEL
0
Controls simultaneous update of all Attenuation Latches
0: Store DACL in intermediate latch (no change to output)
1: Store DACL and update attenuation on all channels.
Attenuation data for Right channel DACR in 0.5dB steps.
[7:0]
RAT[7:0]
11111111 (0dB)
0001
Attenuation
DACR
8
UPDATER
0
Controls simultaneous update of all Attenuation Latches
0: Store DACR in intermediate latch (no change to output)
1: Store DACR and update attenuation on all channels.
Table 4 Attenuation Register Map
Note:
1.
The UPDATE bit is not latched. If UPDATE=0, the Attenuation value will be written to the pre-latch but not applied to the
relevant DAC. If UPDATE=1, all pre-latched values and the current value being written will be applied on the next input
sample.
2.
Care should be used in reducing the attenuation as rapid large volume changes can introduce zipper noise if the ZCDINIT
register bit has been set, (disabled).
DAC OUTPUT ATTENUATION
Registers DACR and DACL control the left and right channel attenuation. Table 9 shows how the
attenuation levels are selected from the 8-bit words.
DACX[7:0]
00(hex)
01(hex)
:
:
:
FE(hex)
FF(hex)
ATTENUATION LEVEL
∞
dB (mute)
127.5dB
:
:
:
0.5dB
0dB
Table 5 Attenuation Control Levels
MUTE MODES
Figure 10 shows the application and release of MUTE whilst a full amplitude sinusoid is being
played at 48kHz sampling rate. When MUTE (lower trace) is asserted, the output (upper trace)
begins to decay exponentially from the DC level of the last input sample. The output will decay
towards V
MID
with a time constant of approximately 64 input samples. When MUTE is de-
asserted, the output will restart almost immediately from the current input sample.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| WM8718EDS | 24 BIT DIFFERENTIAL STEREO DAC WITH VOLUME CONTROL |
| WM8718SEDS | 24 BIT DIFFERENTIAL STEREO DAC WITH VOLUME CONTROL |
| WM8722 | Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs |
| WM8725 | 99dB Stereo DAC |
| WM8725ED | 99dB Stereo DAC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM8718_06 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24 Bit Differential Stereo DAC with Volume Control |
| WM8718-6088-DS20-M-S | 功能描述:音頻 IC 開發(fā)工具 WM8718 MINI Eval Board System RoHS:否 制造商:Texas Instruments 產(chǎn)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 |
| WM8718EDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24 BIT DIFFERENTIAL STEREO DAC WITH VOLUME CONTROL |
| WM8718EDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24 BIT DIFFERENTIAL STEREO DAC WITH VOLUME CONTROL |
| WM8718GEFL/RV | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Stereo DAC Differential O/P RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。