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參數(shù)資料
| 型號(hào)： | 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)： | 19/20頁 |
| 文件大小： | 208K |
| 代理商： | ST7597 |
PARAMETER DEFINITIONS
THD+N
: (Total Harmonic Distortion + Noise) is the ratio of the rms value of the
input signal to the RMS sum of all other spectral components within
the measurement bandwidth 10Hz to 20kHz). Units in %.
: The THD+N with a 1kHz, -60dB input signal, with 60dB added to
compensate for the small input signal. Use of a small input signal
reduces the harmonic distortion components of the noise to
insignificance. Units in dB.
: 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). Units in dB.
Signal to Peak Harmonics (-3dB) : The Signal to Peak Harmonics is the difference between the input signal
(a 1kHz, -3dB input signal) to the peak of the harmonics components
within the measurement bandwidth 10Hz to 20kHz. Units in dB.
Frequency Response
: The worst case variation in output signal level versus frequency over
10Hz to 20KHz. Units in dB.
Dynamic Range
Signal to Noise
100nF
10
m
F
10
m
F
100nF
2
0
m
0
m
0
m
0
m
0
m
0
m
0
m
0
m
0
m
0
m
0
m
68nF
1
m
F
1
m
F
1
2
3
4
5
6
7
8
9
10
11
12
DVDD1
DV
SS1
XTALIN
DV
SS2
DV
DD2
XTALOUT
SDATAOUT
BITCLK
SDATAIN
SYNC
RESET
PCBEEP
36
35
34
33
32
31
30
29
28
27
26
25
LINEOUTL
LINEOUTR
DACOUTL
DACOUTR
VOCR
VOCL
CMIC0
CMIC1
V
REFOUT
V
REF1
AV
SS1
AV
DD1
13
14
15
16
17
18
19
20
21
22
23
24
P
A
A
V
V
C
C
C
M
M
L
L
48
47
46
45
44
43
42
41
40
39
38
37
M
A
D
V
R
A
A
A
S
B
B
B
B
T
T
1
m
F
68nF
0
m
2
0.1
m
F
1
1
m
F
15pF
15pF
XTL 24.576MHz
(see Note 3)
(see Note 3)
(see Note 3)
(see Note 3)
ST7597
Notes : 1.
2.
3.
With 0.1
m
F > low cut-off frequency 50Hz (capacitor value to be increased)
Requested decoupling capacitor
V
SS
ground, as short as possible, start routing
(see Note 3)
(see Note 3)
7
APPLICATION DIAGRAM
ST7597
19/20
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