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參數(shù)資料
| 型號： | WM8725ED |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 99dB Stereo DAC |
| 中文描述： | 九九分貝立體聲DAC |
| 文件頁數(shù)： | 6/9頁 |
| 文件大?。?/td> | 348K |
| 代理商： | WM8725ED |
WM8725
Production Data
WOLFSON MICROELECTRONICS LTD
PD Rev 2.0 July 2000
6
The outputs of the 2 DACs are buffered out of the device by buffer amplifiers. These amplifiers will
source load current of several mA and sink current up to 1.5mA, so allowing significant loads to be
driven. The output source is active and the sink is Class A, i.e. fixed value, so greater loads might be
driven if an external
‘
pull-down
’
resistor is connected at the output.
Typically an external low pass filter circuit will be used to remove residual sampling noise of the 64x
oversampling used and if desired adjust the signal amplitude and device strength.
SERIAL DATA INTERFACE
WM8725 has serial interface formats that are fully compatible with both normal (MSB first,
right-justified) and I
S interfaces. The data format is selected with the FORMAT pin. When
FORMAT is LOW, normal data format is selected. When the format is HIGH, I
S format is
selected. It must be noted that in
“
packed
”
mode operation (exactly 32 BCLKs per LRCIN
period), the data word must align exactly with LRCIN clock edges (effectively both left and
right justified at the same time). This is true in both normal and I
S modes.
FORMAT
0
DESCRIPTION
Normal format
(MSB-first, right justified)
I
2
S format
(Philips serial data protocol)
1
Table 3 Serial Interface Formats
MSB
MSB
LSB
LSB
LEFT CHANNEL
RIGHT CHANNEL
LRCIN
BCKIN
DIN
Audio Data Word = 16-Bit
1/fs
1
2
3
14 15 16
1
2
3
14 15 16
Figure 1 ‘Normal’ Data Input Timing
MSB
MSB
LSB
LSB
LEFT CHANNEL
RIGHT CHANNEL
LRCIN
BCKIN
DIN
Audio Data Word = 16-Bit
1/fs
1
2
3
14 15 16
1
2
3
14 15 16
Figure 2 I
2
S Data Input Timing
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| WM8756 | 192KHZ SIX CHANNEL SACD COMPATIBLE AUDIO DAC |
| WM8762 | 24-bit 192kHz Stereo DAC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM8725ED/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:99dB Stereo DAC |
| WM8725GED | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Stereo DAC 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 |
| WM8725GED/RV | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Stereo DAC 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 |
| WM8725GED/V | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Stereo DAC 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 |
| WM8726 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit 192kHz Stereo DAC |
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