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參數(shù)資料
| 型號(hào)： | TS4982IQT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC32 |
| 封裝： | 5 X 5 MM, ROHS COMPLIANT, QFN-32 |
| 文件頁(yè)數(shù)： | 11/31頁(yè) |
| 文件大小： | 537K |
| 代理商： | TS4982IQT |
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TS4982
Application information
Doc ID 14527 Rev 2
19/31
4.4
Loudspeaker 3D effect enhancement
The TS4982 features a 3D audio effect which can be programmed at three discrete levels
(LOW, MEDIUM, HIGH) through input pins 3D1 and 3D0 which provide a digital interface.
The correspondence between the logic levels of this interface and 3D effect levels are
shown in the Table 12 on page 19.
The 3D audio effect applied to the stereo audio signals evokes perception of spatial hearing
and improves this effect in cases where the stereo speakers are too close to each other,
such as in small handheld devices or mobile equipment.
The perceived amount of 3D effect also depends on many factors such as speaker position,
distance between speakers and listener, frequency spectrum of the audio signal, or the
difference of signal between the left and right channels. In some cases, the volume can
increase when the 3D effect is switched on. This factor depends on the composition of the
stereo audio signal and its frequency spectrum.
4.5
Low frequency response
Figure 40.
Simplified schematic of input stage
In the low-frequency region, the input coupling capacitor Cin starts to have an effect. Cin
forms, with the Rin, a first order high-pass filter with a -3 dB cut-off frequency:
Table 12.
3D effect settings
3D1
3D0
V3D1
V3D0
3D effect level
00
VIL
OFF
01
VIL
VIH
LOW
10
VIH
VIL
MEDIUM
11
VIH
HIGH
Cin
INPUT
Rin
Rfeed
BIAS
Internal (TS4982)
External
F
CL
1
2
π Rin Cin
----------------------------------------
=
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| TS4984 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 x 1W Stereo audio power amplifier with active low standby mode |
| TS4984EIJT | 功能描述:音頻放大器 2x1.2W stereo audio RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS4984EIKJT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1.2W Stereo Audio Power Amplifier with Active Low Standby Mode |
| TS4984FC | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1.2W Stereo Audio Power Amplifier with Active Low Standby Mode |
| TS4984IQT | 功能描述:音頻放大器 2x1W stereo audio Pwr amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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