參數(shù)資料
型號(hào): TPS65950ZXNT
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA209
封裝: 7 X 7 MM, 0.40 MM PITCH, PLASTIC, BGA-209
文件頁數(shù): 149/167頁
文件大小: 2566K
代理商: TPS65950ZXNT
6.1.10 Boost Stage
TPS65950
Integrated Power Management/Audio Codec
SWCS032 – OCTOBER 2008
www.ti.com
The boost effect adds emphasis to low frequencies. It compensates for an HPF created by the capacitor
resistor (CR) filter of the headset (in ac-coupling configuration).
There are four modes. Three effects are available, with slightly different frequency responses, and the
fourth setting disables the boost effect:
Boost effect 1
Boost effect 2
Boost effect 3
Flat equalization: The boost effect is in bypass mode.
Table 6-14 and Table 6-15 list typical values according to frequency response versus input frequency and
FS frequency.
Table 6-14. Boost Electrical Characteristics Versus FS Frequency (FS ≤ 22.05 kHz)
FS = 8 kHz
FS = 11.025 kHz
FS = 12 kHz
FS = 16 kHz
FS = 22.05 kHz
Frequency
Unit
(Hz)
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
10
4.51
5.13
5.62
5.10
5.51
5.80
5.22
5.58
5.83
5.54
5.77
5.92
5.76
5.89
5.97
12
4.08
4.83
5.46
4.80
5.32
5.71
4.95
5.41
5.76
5.36
5.66
5.87
5.65
5.83
5.94
15.2
3.43
4.32
5.18
4.28
4.97
5.54
4.47
5.11
5.61
5.03
5.47
5.79
5.45
5.71
5.90
18.2
2.91
3.86
4.89
3.82
4.63
5.36
4.04
4.80
5.45
4.71
5.26
5.69
5.24
5.59
5.84
20.5
2.56
3.53
4.65
3.49
4.37
5.21
3.72
4.56
5.32
4.45
5.09
5.60
5.06
5.49
5.79
29.4
1.62
2.49
3.78
2.45
3.42
4.57
2.68
3.74
4.73
3.51
4.39
5.24
4.35
5.02
5.59
39.7
1.05
1.71
2.93
1.67
2.55
3.84
1.88
2.80
4.06
2.66
3.63
4.72
3.67
4.45
5.27
50.4
0.71
1.20
2.26
1.17
1.91
3.17
1.33
2.13
3.41
2.01
2.95
4.19
2.89
3.85
4.88
60.3
0.51
0.92
1.79
0.89
1.49
2.65
1.00
1.68
2.89
1.57
2.43
3.72
2.39
3.35
4.52
76.7
0.32
0.61
1.26
0.59
1.05
1.99
0.69
1.18
2.22
1.11
1.79
3.04
1.76
2.66
3.94
97.5
0.20
0.39
0.87
0.38
0.70
1.43
0.44
0.79
1.62
0.75
1.27
2.36
1.24
2.00
3.28
dB
131.5
0.12
0.21
0.50
0.20
0.39
0.88
0.25
0.47
1.02
0.42
0.78
1.59
0.75
1.30
2.41
157
0.08
0.15
0.36
0.15
0.28
0.65
0.17
0.33
0.75
0.31
0.57
1.22
0.55
0.99
1.93
200
0.05
0.09
0.22
0.09
0.17
0.41
0.11
0.21
0.49
0.19
0.37
0.82
0.36
0.66
1.38
240
0.03
0.06
0.15
0.06
0.12
0.29
0.07
0.14
0.35
0.14
0.26
0.60
0.25
0.48
1.04
304
0.02
0.04
0.09
0.04
0.07
0.18
0.04
0.09
0.22
0.08
0.16
0.38
0.16
0.30
0.70
463
0.00
0.01
0.03
0.01
0.03
0.07
0.02
0.04
0.09
0.03
0.07
0.17
0.07
0.13
0.32
704
0.00
0.01
0.00
0.01
0.03
0.01
0.03
0.01
0.03
0.07
0.03
0.06
0.14
1008
0.00
0.01
0.00
0.01
0.00
0.01
0.03
0.01
0.02
0.06
1444
0.00
0.01
0.02
2070
0.00
0.01
3770
0.00
Audio/Voice Module
82
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