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參數(shù)資料
型號(hào)： TPA0102PWPLE
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
封裝： PLASTIC, HTSSOP-24
文件頁(yè)數(shù)： 25/43頁(yè)
文件大小： 1122K
代理商： TPA0102PWPLE
TPA0102
1.5-W STEREO AUDIO POWER AMPLIFIER
SLOS166E – MARCH 1997 – REVISED MARCH 2000
31
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
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:
(12)
1
C
B
25 k
v
1
C
I RI
1
R
LCC
output coupling capacitor, CC
In the typical single-supply SE configuration, an output coupling capacitor (CC) is required to block the dc bias
at the output of the amplifier thus preventing dc currents in the load. As with the input coupling capacitor, the
output coupling capacitor and impedance of the load form a high-pass filter governed by equation 13.
(13)
f
c(high) +
1
2
pR
L
C
–3 dB
fc
The main disadvantage, from a performance standpoint, is the load impedances are typically small, which drives
the low-frequency corner higher degrading the bass response. Large values of CC are required to pass low
frequencies into the load. Consider the example where a CC of 330 F is chosen and loads vary from 4 , 8
, 32 , to 47 k. Table 2 summarizes the frequency response characteristics of each configuration.
Table 2. Common Load Impedances Vs Low Frequency Output Characteristics in SE Mode
RL
CC
LOWEST FREQUENCY
4
330
F
120 Hz
8
330
F
60 Hz
32
330
F
15 Hz
47,000
330
F
0.01 Hz
As Table 2 indicates, most of the bass response is attenuated into a 4-
load, an 8- load is adequate,
headphone response is good, and drive into line level inputs (a home stereo for example) is exceptional.
相關(guān)PDF資料
PDF描述
TPA0102PWPR 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
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TPA0102PWPG4 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA0102PWPR 功能描述:音頻放大器 1.5-W STEREO AUDIO POWER AMPLIFIER 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
TPA0102PWPRG4 功能描述:音頻放大器 1.5-W STEREO AUDIO POWER AMPLIFIER 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
TPA0103 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.75-W 3-CHANNEL STEREO AUDIO POWER AMPLIFIER
TPA0103EVM 功能描述:音頻 IC 開(kāi)發(fā)工具 AUDIO POWER AMP EVAL MODULE RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
TPA0103PWP 功能描述:音頻放大器 1.75W 3-Ch. 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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