參數(shù)資料
型號(hào): AD1887JST
廠商: ANALOG DEVICES INC
元件分類: 消費(fèi)家電
英文描述: AC’97 SoundMAX Codec
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝: PLASTIC, TQFP-48
文件頁數(shù): 2/16頁
文件大?。?/td> 150K
代理商: AD1887JST
REV. 0
–2–
AD1887–SPECIFICATIONS
ANALOG INPUT
Parameter
Min
Typ
Max
Unit
Input Voltage (RMS Values Assume Sine Wave Input)
LINE_IN, CD
1
2.83
0.1
0.283
1
2.83
20
5
V rms
V p-p
V rms
V p-p
V rms
V p-p
k
pF
MIC with 20 dB Gain
MIC with 0 dB Gain
Input Impedance
*
Input Capacitance
*
7.5
HEADPHONE OUT VOLUME
Parameter
Min
Typ
Max
Unit
Step Size (+6 dB to –88.5 dB); HP_OUT_R, HP_OUT_L
Output Attenuation Range Span
*
Mute Attenuation of 0 dB Fundamental
*
1.5
–94.5
dB
dB
dB
80
PROGRAMMABLE GAIN AMPLIFIER—ADC
Parameter
Min
Typ
Max
Unit
Step Size (0 dB to 22.5 dB)
PGA Gain Range Span
1.5
22.5
dB
dB
ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS
Parameter
Min
Typ
Max
Unit
Signal-to-Noise Ratio (SNR)
CD to HP_OUT
Other to HP_OUT
Step Size (+12 dB to –34.5 dB): (All Steps Tested)
MIC, LINE_IN, CD, DAC
Input Gain/Attenuation Range:
MIC, LINE_IN, CD, DAC
90
90
dB
dB
1.5
dB
–46.5
dB
DIGITAL DECIMATION AND INTERPOLATION FILTERS
*
Parameter
Min
Typ
Max
0.4
×
f
S
±
0.09
0.6
×
f
S
Unit
Pass Band
Pass-Band Ripple
Transition Band
Stop Band
Stop-Band Rejection
Group Delay
Group Delay Variation over Pass Band
0
Hz
dB
Hz
Hz
dB
sec
μ
s
0.4
×
f
S
0.6
×
f
S
–74
12/
f
S
0.0
*
Guaranteed but not tested.
STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
Temperature
Digital Supply (V
DD
)
Analog Supply (V
CC
)
Sample Rate (
f
S
)
Input Signal
Analog Output Pass Band
V
IH
V
IL
V
IH
(CS0, CS1)
V
IL
25
°
C
3.3 V
5.0 V
48 kHz
1008 Hz
20 Hz to 20 kHz
2.0 V
0.8 V
4.0 V
1.0 V
DAC Test Conditions
Calibrated
–3 dB Attenuation Relative to Full Scale
Input 0 dB
32
Output Load (HP_OUT)
ADC Test Conditions
Calibrated
0 dB Gain
Input –3.0 dB Relative to Full Scale
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