參數(shù)資料
型號： ST7597
廠商： 意法半導(dǎo)體
元件分類： Codec
英文描述： AC97 Audio Codec(AC97 音頻編解碼器)
中文描述： AC97音頻編解碼器（AC97音頻編解碼器）
文件頁數(shù)： 17/20頁
文件大?。?/td> 208K
代理商： ST7597
ANALOG CHARACTERISTICS
Standard test conditions unless otherwise specified
T
amb
= 25°C, AV
DD
= DV
DD
= +5V, V
IL
= 0.8V, V
IH
= 2.4V, 1kHz full scale input Sine wave,
Measurement Bandwidth is 10Hz-20kHz,
Sample Frequency = 48kHz, 10k
/50pF load, 0dB attenuation, tone and 3D disabled.
Symbol
Parameter
Full scale input voltage
Test Conditions
0dB, all inputs
20dB boost, MIC inputs (1)
0 dB
Min.
Typ.
1.0
0.1
1.0
Max.
Unit
V
RMS
V
RMS
V
RMS
Full scale output voltage
Analog SNR
CD to LINE OUT
Other to LINE OUT
Digital SNR ( 2)
DAC
ADC
Total Harmonic Distortion + Noise (THD+N) (3)
D/A & A/D Frequency Response
Transition Band
Stop Band
Stop Band Rejection (4)
Out-of-Band Rejection (5)
Group Delay
Crosstalk between Channels
Stereo Separation
Inter-channel Isolation
Spurious Tone Reduction
Left/Right Channel Gain Mismatch
Input Signal Frequency Response
Analog Input Impedance
Analog Input Capacitance
Power Supply Rejection Ratio
Output Load refered to Analog Ground (VMC)
Output Load for LINE OUT (C)
Output Voltage
V
REF1
,
V
REF2
Output Voltage
V
REFOUT
Output Current Drive
Offset Voltage (6)
Delta Offset (7)
90
94
93
dB
dB
85
85
89
87
dB
dB
%
Hz
Hz
Hz
dB
dB
ms
0.02
18,050
28,800
Infinite
±
0.25dB
20
18,050
28,800
-74
-40
1
-85
-90
-100
-72
-72
dB
dB
dB
dB
dB
k
pF
dB
k
pF
V
V
mA
mV
mV
0.5
1
-1
20
15
f = 1kHz
50
10
50
V
REFOUT
2.3
2.3
5
15
30
10
Notes :
1. With +20dB Boost On, 1.0V
RMS
with Boost Off.
2. The ratio of the RMS output level with 1kHz full scale input to the rms output level with all zeros into the digital input. Measured with
"A-weighted factor" over a 20Hz to a 20kHz bandwidth (AES17-1991 Idle Channel Noise or EIAJ CP-307 Signal-to-noise-Ratio).
3. Analog specs. are based on a 1kHz, 0dB sine wave test signal.
4. Stop Band rejection determines filter requirements. Out-of-Band rejection determines audible noise.
5. The integrated Out-of-Band noise generated by the DAC process, during normal PCM audio playback, over 1 bandwidth 28.8 to
100kHz, with respect to a 1V
RMS
DAC output.
6. Offset voltage refers to the deviation of the output from mid-scale with input shorted over the entire playback path. Offset from zero
refer to the deviation of the output from mid-scale with input shorted over the entire recording path.
7. Delta offset refers to the variations in offset under different operating conditions, especially with different sampling rates & without
re-calibration.
7
ST7597
17/20
相關(guān)PDF資料
PDF描述
ST75C185 LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
ST75C185BD LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
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ST75C185BN LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
ST75C185BTR LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
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