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參數(shù)資料
| 型號： | XWM9708CDS |
| 廠商： | Wolfson Microelectronics |
| 元件分類： | Codec |
| 英文描述： | AC97 Revision 2.1 Audio Codec |
| 中文描述： | AC97音頻編解碼器2.1版 |
| 文件頁數(shù)： | 4/28頁 |
| 文件大?。?/td> | 205K |
| 代理商： | XWM9708CDS |
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WM9708
Advanced Information
WOLFSON MICROELECTRONICS LTD
AI Rev 2.0 April 2001
4
ELECTRICAL CHARACTERISTICS
Test Characteristics
:
AVDD = 5V, GND = 0V
…………
..T
A
= 0
o
C to +70
o
C, unless otherwise stated
DVDD = 3.3V, GND = 0V
…………
..T
A
= 0
C to +70
C, unless otherwise stated
PARAMETER
Digital Logic Levels (DVDD = 3.3 or 5.0V)
Input LOW level
Input HIGH level
Output LOW
Output HIGH
Analogue I/O Levels (Input Signals on any inputs, Outputs on LINEOUT L, R and MONOOUT)
Input level
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
IL
V
IH
V
OL
V
OH
AGND -0.3
2.2
0.8
V
V
V
V
AVDD +0.3
0.10 x VDD
0.90 x VDD
Minimum input
impedance = 10k
Into 10kohm load
AGND
-100mV
AGND
+300mV
AVDD
+100mV
AVDD
-300mV
V
Output level
Near rail to
rail
V
Reference Levels
Reference input/output
CAP2 impedance
Mixer reference
CAP2
2/5 AVDD
AVDD/2
75
Buffered
CAP2
Buffered
CAP2
-15
3/5 AVDD
V
kohms
V
VREF
MIC reference
VREFOUT
V
MIDBUFF current sink
(pins VREF and VREFOUT)
MIDBUFF current source
(pins VREF and VREFOUT)
MIDBUFF current source
(pins VREF and VREFOUT)
MIDBUFF current sink
(pins VREF and VREFOUT)
DAC Circuit Specifications (AVDD = 5V) 48kHz sampling
SNR A-weighted (Note 1)
Full scale output voltage
THD
Frequency response
Transition band
Stop band
Out of band rejection
Spurious tone reduction
PSRR
ADC Circuit Specifications (AVDD = 5V) 48kHz sampling
SNR A-weighted (Note 1)
ADC input for full scale output
THD
Frequency response
Transition band
Stop band
Stop band rejection
PSRR
AVDD = 5V
-5
mA
AVDD = 5V
5
15
mA
AVDD = 3.3V
10
mA
AVDD = 3.3V
-10
mA
85
95
1.0
90
dBv
Vrms
dBv
Hz
Hz
Hz
dB
dB
dB
VREF
= 2.5V
-3dBfs input
74 (0.02%)
20
19,200
28,800
19,200
28,800
-40
-100
40
20 to 20kHz
75
92
1.0
95
dB
Vrms
dB
Hz
Hz
Hz
dB
dB
VREF
= 2.5V
-6dBv input
74
20
19,200
28,800
19,200
28,800
-74
20 to 20kHz
40
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