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參數資料
| 型號： | TPA0202PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| 封裝： | GREEN, PLASTIC, HTSSOP-24 |
| 文件頁數： | 27/45頁 |
| 文件大小： | 1035K |
| 代理商： | TPA0202PWPRG4 |
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TPA0202
2-W STEREO AUDIO POWER AMPLIFIER
SLOS205B – FEBRUARY 1998 – REVISED DECEMBER 2000
33
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
SE/BTL
Rm2
100 k
Rm1
100 k
VDD
Left
Channel
From GPIO
Right
Channel
0.1
F
Figure 66. Implementation with a Diode
The OR gate and diode isolate the GPIO terminal from the headphone switch. In these implementations, the
headphone switch has priority.
When the amplifier is in mute mode, the output stage continues to be biased. This causes the transition out of
mute mode to be very fast with only a short delay (from 100 ms to 500 ms). During power up or the transition
out of shutdown mode, a longer delay ( from 1 s to 2 s) is required. The exact delay time required is dependent
on the values of the external components used with the amplifier (see Figure 67).
System Control:
MUTE or SHUTDOWN
Delay
Output of Delay Circuit
(Input to SE/BTL)
Figure 67. Transition Delay Timing
single-ended operation
In SE mode (see Figure 59 and Figure 60), the load is driven from the primary amplifier output for each channel
(OUT+, terminals 22 and 3).
In SE mode the gain is set by the RF and RI resistors and is shown in equation 11. Since the inverting amplifier
is not used to mirror the voltage swing on the load, the factor of 2, from equation 5, is not included.
(11)
SE Gain
+ *
R
F
R
I
The output coupling capacitor required in single-supply SE mode also places additional constraints on the
selection of other components in the amplifier circuit. The rules described earlier still hold with the addition of
the following relationship (see equation 12):
(12)
1
C
B
25 k
v
1
C
I RI
1
R
LCC
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相關代理商/技術參數 |
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| TPA0211 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W MONO AUDIO POWER AMPLIFIER |
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| TPA0211DGN | 功能描述:音頻放大器 2W Mono 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 |
| TPA0211DGNG4 | 功能描述:音頻放大器 Mono Class-AB w/Mono Hdphone Drive 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 |
| TPA0211DGNR | 功能描述:音頻放大器 Mono Class-AB w/Mono Hdphone Drive 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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