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參數資料
| 型號： | 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 |
| 文件頁數： | 8/31頁 |
| 文件大小： | 537K |
| 代理商： | TS4982IQT |
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Application information
TS4982
16/31
Doc ID 14527 Rev 2
4
Application information
4.1
General description
The TS4982 is a stereo loudspeaker power amplifier and ground-referenced headphone
driver with dedicated separated single-ended inputs in a QFN32 package, which is the best
solution in space-saving applications. Each of the audio paths, loudspeaker or headphone,
can be independently set to standby mode to save battery life.
The loudspeaker amplifier with BTL output configuration (see Section 4.2: Loudspeaker BTL
configuration principle on page 16) can deliver 2 W output power into a 4
Ω load with both
channels enabled at 1% THD+N with a nominal power supply of 5 V. The gain (see
Section 4.2) of the loudspeaker amplifier can be set to four discrete levels thanks to two
digital inputs. The stereo sound perception which could seem poor in an application
(notebook) can be enhanced by a 3D effect internal block in three levels (see Section 4.3:
In the audio path which is not in standby mode, a PC beep signal is mixed if it is detected
(see Section 4.7: PC beep on page 21) on the PC beep input.
The outputs are protected against over-current consumption which can appear when the
outputs are short-circuited between them or to GND or Vcc. There is also an internal
thermal shutdown activated at 150° C (typical) and deactivated at 120° C (typical).
4.2
Loudspeaker BTL configuration principle
Figure 38.
Simplified schematic of the loudspeaker amplifier
Av=1
INPUT
Av=-1
BIAS
Vout1
Vout2
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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