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參數(shù)資料
| 型號(hào)： | WM8728 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 24-bit, 192kHz Stereo DAC with Volume Control and DSD Support |
| 中文描述： | 24位，192kHz立體聲DAC，具有音量控制和渠務(wù)署支持 |
| 文件頁數(shù)： | 5/28頁 |
| 文件大?。?/td> | 266K |
| 代理商： | WM8728 |
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WM8728
Product Preview
WOLFSON MICROELECTRONICS LTD
PP Rev 1.2 April 2001
5
Test Conditions
AVDD, DVDD = 5V, AGND = 0V, DGND = 0V, T
A
= +25
o
C, fs = 48kHz, MCLK = 256fs unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
To midrail or a.c.
Minimum resistance load
MIN
TYP
1
MAX
UNIT
kohms
coupled
To midrail or a.c.
coupled
(AVDD = 3.3V)
5V or 3.3V
600
ohms
Maximum capacitance load
Output d.c. level
100
pF
V
(VREFP -
VREFN)/2
Power On Reset (POR)
POR threshold
2.4
V
Notes:
1.
Ratio of output level with 1kHz full scale input, to the output level with all ZEROS into the digital input, over a 20Hz to
20kHz bandwidth.
All performance measurements done with 20kHz low pass filter, and where noted an A-weight filter. Failure to use such a
filter will result in higher THD+N and lower SNR and Dynamic Range readings than are found in the Electrical
Characteristics. The low pass filter removes out of band noise; although it is not audible it may affect dynamic specification
values.
VMID decoupled with 10uF and 0.1uF capacitors (smaller values may result in reduced performance).
2.
3.
TERMINOLOGY
1.
Signal-to-noise ratio (dB) - SNR is a measure of the difference in level between the full-scale output and the output with a
ZERO signal applied. (No Auto-ZERO or Automute function is employed in achieving these results).
2.
Dynamic range (dB) - DNR is a measure of the difference between the highest and lowest portions of a signal. Normally a
THD+N measurement at 60dB below full scale. The measured signal is then corrected by adding the 60dB to it. (e.g.
THD+N @ -60dB= -32dB, DR= 92dB).
3.
THD+N (dB) - THD+N is a ratio, of the rms values, of (Noise + Distortion)/Signal.
4.
Stop band attenuation (dB) - Is the degree to which the frequency spectrum is attenuated (outside audio band).
5.
Channel Separation (dB) - Also known as Cross Talk. This is a measure of the amount one channel is isolated from the
other. Normally measured by sending a full-scale signal down one channel and measuring the other.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| WM8728_04 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit, 192kHz Stereo DAC with Volume Control |
| WM8728_12 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit, 192kHz Stereo DAC with Volume Control |
| WM8728-6059-DS20-M-S | 功能描述:音頻 IC 開發(fā)工具 WM8728 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(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| WM8728SEDS | 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 |
| WM8728SEDS/R | 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 |
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