參數(shù)資料
型號: AD1981BLJSTZ2
廠商: Analog Devices, Inc.
元件分類: Codec
英文描述: AC ’97 SoundMAX㈢ Codec
中文描述: ㈢交流\u0026#39;97 SoundMAX編解碼器
文件頁數(shù): 2/28頁
文件大?。?/td> 215K
代理商: AD1981BLJSTZ2
REV. 0
–2–
AD1981BL
–SPECIFICATIONS
STANDARD TEST CONDITIONS, UNLESS
OTHERWISE NOTED
Temperature
Digital Supply (DVDD)
Analog Supply (AVDD)
Sample Rate (f
S
)
Input Signal
Analog Output Pass Band
25
°
C
3.3 V
3.3 V
48 kHz
1008 Hz
20 Hz to 20 kHz
DAC Test Conditions
Calibrated
–3 dB Attenuation Relative to Full Scale
0 dB Input
10 k
Output Load (LINE_OUT)
32
Output Load (HP_OUT)
ADC Test Conditions
Calibrated
0 dB Gain
Input –3.0 dB Relative to Full Scale
Parameter
Min
Typ
Max
Unit
ANALOG INPUT
Input Voltage (RMS Values Assume Sine Wave Input)
LINE_IN, AUX, CD, PHONE_IN
0.707
2.0
0.0707
0.2
0.707
2.0
20
5
V rms
V p-p
V rms
V p-p
V rms
V p-p
k
pF
MIC_IN with +20 dB Gain
MIC_IN with 0 dB Gain
Input Impedance
1
Input Capacitance
1
7.5
MASTER VOLUME
Step Size (0 dB to –46.5 dB): LINE_OUT_L, LINE_OUT_R
Output Attenuation Range
1
Step Size (0 dB to –46.5 dB): MONO_OUT
Output Attenuation Range
1
Step Size (0 dB to –46.5 dB): HP_OUT_R, HP_OUT_L
Output Attenuation Range Span
1
Mute Attenuation of 0 dB Fundamental
1
1.5
46.5
1.5
46.5
1.5
46.5
dB
dB
dB
dB
dB
dB
dB
80
PROGRAMMABLE GAIN AMPLIFIER—ADC
Step Size (0 dB to 22.5 dB)
PGA Gain Range
1.5
22.5
dB
dB
ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS
Signal-to-Noise Ratio (SNR)
CD to LINE_OUT
Other to LINE_OUT
1
Step Size (+12 dB to –34.5 dB) (All Steps Tested):
MIC_IN, LINE_IN, CD, AUX, PHONE_IN, DAC
Input Gain/Attenuation Range:
MIC_IN, LINE_IN, CD, AUX, PHONE_IN, DAC
DIGITAL DECIMATION AND INTERPOLATION FILTERS
1
Pass Band
Pass-Band Ripple
Transition Band
Stop Band
Stop-Band Rejection
Group Delay
Group Delay Variation over Pass Band
90
90
dB
dB
1.5
dB
46.5
dB
0
0.4 f
S
±
0.09
0.6 f
S
Hz
dB
Hz
Hz
dB
sec
μ
s
0.4 f
S
0.6 f
S
–74
16/f
S
0
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