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| 型号： | TPA0202PWPG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 2.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| 封装： | GREEN, PLASTIC, HTSSOP-24 |
| 文件页数： | 30/45页 |
| 文件大小： | 1035K |
| 代理商： | TPA0202PWPG4 |
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TPA0202
2-W STEREO AUDIO POWER AMPLIFIER
SLOS205B – FEBRUARY 1998 – REVISED DECEMBER 2000
36
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
Input MUX operation
Working in concert with the SE/BTL feature, the HP/LINE MUX feature gives the audio designer the flexibility
of a multichip design in a single IC (see Figure 69). The primary function of the MUX is to allow different gain
settings for BTL versus SE mode. Speakers typically require approximately a factor of 10 more gain for similar
volume listening levels as compared to headphones. To achieve headphone and speaker listening parity, the
resistor values would need to be set as follows:
(15)
SE Gain
(HP) + *
R
F(HP)
R
I(HP)
If, for example RI(HP) = 10 k and RF(HP) = 10 k then SE Gain(HP) = –1
(16)
BTL Gain
(LINE) +* 2
R
F(LINE)
R
I(LINE)
If, for example RI(LINE) = 10 k and RF(LINE) = 50 k then BTL Gain(LINE) = –10
ROUT+
ROUT –
CIRLINE R
IRLINE
15
22
CIRHP
RIRHP
RFRHP
MUX
RLINE IN
RHP IN
SE/BTL
HP/LINE
VDD
16
14
+
–
Left Channel
20
21
Right Channel
MID
RFRLINE
0.1
F
Figure 69. TPA0202 Example Input MUX Circuit
Another advantage of using the MUX feature is setting the gain of the headphone channel to –1. This provides
the optimum distortion performance into the headphones where clear sound is more important. Refer to the
SE/BTL operation section for a description of the headphone jack control circuit.
相关PDF资料 |
PDF描述 |
|---|---|
| TPA0202PWPRG4 | 2.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA0211DGN | 2 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA0211DGNR | 2 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA0211DGNG4 | 2 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA0211DGNRG4 | 2 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPA0202PWPR | 功能描述:音频放大器 2W St Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA0202PWPRG4 | 功能描述:音频放大器 2W St Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA0211 | 制造商:TI 制造商全称:Texas Instruments 功能描述:2-W MONO AUDIO POWER AMPLIFIER |
| TPA0211_07 | 制造商:TI 制造商全称:Texas Instruments 功能描述:2-W MONO AUDIO POWER AMPLIFIER |
| TPA0211DGN | 功能描述:音频放大器 2W Mono Audio RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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