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參數(shù)資料
| 型號： | XWM8729ED |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 24-bit, 192kHz Stereo DAC |
| 中文描述： | 24位，192kHz的立體聲DAC |
| 文件頁數(shù)： | 5/15頁 |
| 文件大?。?/td> | 169K |
| 代理商： | XWM8729ED |
WM8729
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, measured ‘A’ weighted
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 no
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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| XWM8731EDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Portable Internet Audion CODEC with Headphone Driver and Programmable Sample Rates |
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| XWM8734EDS | 功能描述:接口—CODEC Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| XWM8734EDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Stereo Audio CODEC |
| XWM8734EDS/RV | 功能描述:接口—CODEC Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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