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AD1885 数据表(PDF) 2 Page - Analog Devices

部件名 AD1885
功能描述  AC??7 SoundMAX Codec
PDF  27 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD1885 数据表(HTML) 2 Page - Analog Devices

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REV. 0
AD1885–SPECIFICATIONS
ANALOG INPUT
Parameter
Min
Typ
Max
Unit
Input Voltage (RMS Values Assume Sine Wave Input)
LINE_IN, AUX, CD, VIDEO, PHONE_IN, PC_BEEP
1
V rms
2.83
V p-p
MIC with 20 dB Gain (M20 = 1)
0.1
V rms
0.283
V p-p
MIC with 0 dB Gain (M20 = 0)
1
V rms
2.83
V p-p
Input Impedance
*
20
k
Ω
Input Capacitance
*
5
7.5
pF
MASTER VOLUME
Parameter
Min
Typ
Max
Unit
Step Size (0 dB to –94.5 dB); LINE_OUT_L, LINE_OUT_R
1.5
dB
Output Attenuation Range Span
*
–94.5
dB
Step Size (0 dB to –46.5 dB); MONO_OUT
1.5
dB
Output Attenuation Range Span
*
–46.5
dB
Step Size (+6 dB to –88.5 dB); HP_OUT_R, HP_OUT_L
1.5
dB
Output Attenuation Range Span
*
–94.5
dB
Mute Attenuation of 0 dB Fundamental
*
80
dB
PROGRAMMABLE GAIN AMPLIFIER—ADC
Parameter
Min
Typ
Max
Unit
Step Size (0 dB to 22.5 dB)
1.5
dB
PGA Gain Range Span
22.5
dB
ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS
Parameter
Min
Typ
Max
Unit
Signal-to-Noise Ratio (SNR)
CD to LINE_OUT
90
dB
Other to LINE_OUT
90
dB
Step Size (+12 dB to –34.5 dB): (All Steps Tested)
MIC, LINE_IN, AUX, CD, VIDEO, PHONE_IN, DAC
1.5
dB
Input Gain/Attenuation Range: MIC, LINE, AUX, CD, VIDEO, PHONE_IN, DAC
–46.5
dB
Step Size (0 dB to –45 dB): (All Steps Tested) PC_BEEP
3.0
dB
Input Gain/Attenuation Range: PC_BEEP
–45
dB
* Guaranteed, not tested.
STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
Temperature
25
°C
Digital Supply (DVDD)
3.3
V
Analog Supply (AVDD)
5.0
V
Sample Rate (FS)
48
kHz
Input Signal
1008
Hz
Analog Output Passband
20 Hz to 20 kHz
DAC Test Conditions
Calibrated
–3 dB Attenuation Relative to Full Scale
Input 0 dB
10 k
Ω Output Load (LINE_OUT)
32
Ω Output Load (HP_OUT)
ADC Test Conditions
Calibrated
0 dB Gain
Input –3.0 dB Relative to Full Scale



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