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參數(shù)資料
| 型號： | WM8725 |
| 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)： | 3/9頁 |
| 文件大?。?/td> | 348K |
| 代理商： | WM8725 |
Production Data
WM8725
WOLFSON MICROELECTRONICS LTD
PD Rev 2.0 July 2000
3
ELECTRICAL CHARACTERISTICS
Test Conditions
V
DD
= 5V, GND = 0V, T
A
= +25
o
C, fs = 48kHz, SCKI = 256fs unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Digital Logic Levels
Input LOW level
Input HIGH level
Analogue Output Levels
Minimum resistance load
V
IL
V
IH
0.8
V
V
2.0
To midrail or AC coupled
(5V supply)
To midrail or AC coupled
(3V supply)
5V or 3V
1
kohms
1
kohms
Maximum capacitance load
Output DC level
Reference Levels
Potential divider resistance
100
V
DD
/2
pF
V
V
DD
to CAP and CAP to GND
VDD = 5V
80
100
120
kohms
Voltage at CAP
DAC Circuit Specifications
SNR (Note 1)
2.3
2.5
2.7
V
VDD = 5V
VDD = 3V
90
99
97
1.0
0.6
0.01
92
dB
dB
V
RMS
V
RMS
%
dB
Hz
Hz
dB
dB
%FSR
Full scale output voltage
Into 10kohm VDD = 5V, 0dB
Into 10kohm VDD = 3V, 0dB
0dB
-60dB
0.9
1.1
THD (Full scale)
THD+N (Dynamic range)
Frequency response
Transition band
Out of band rejection
Channel Separation
Gain mismatch
channel-to-channel
Audio Data Input and System Clock Timing Information
BCKIN pulse cycle time
BCKIN pulse width high
BCKIN pulse width low
BCKIN rising edge to LRCIN edge
LRCIN rising edge to BCKIN
rising edge
DIN setup time
DIN hold time
System clock pulse width high
System clock pulse width low
0.02
0
20,000
20,000
-40
90
±1
±5
t
BCY
t
BCH
t
BCL
t
BL
t
LB
100
50
50
30
30
ns
ns
ns
ns
ns
t
DS
t
DH
t
SCKIH
t
SCKIL
30
30
13
13
ns
ns
ns
ns
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.
2.
All performance measurements done with 20kHz low pass 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.
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| WM8725_04 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:99dB Stereo DAC |
| WM8725_12 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:99dB Stereo DAC |
| WM8725CGED | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Stereo DAC RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換器數(shù)量: 分辨率: 接口類型: 轉(zhuǎn)換速率: 信噪比: 工作電源電壓: DAC 輸出端數(shù)量: 工作溫度范圍: 電源電流: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| WM8725CGED/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:99dB Stereo DAC |
| WM8725ED | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:99dB Stereo DAC |
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