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參數(shù)資料
| 型號： | TPA0172PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
| 封裝： | GREEN, PLASTIC, HTSSOP-24 |
| 文件頁數(shù)： | 6/36頁 |
| 文件大?。?/td> | 885K |
| 代理商： | TPA0172PWPRG4 |
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TPA0172
2W STEREO AUDIO POWER AMPLIFIER
WITH I2C BUS
SLOS327C AUGUST 2000 REVISED MAY 2001
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
input resistance
Each gain setting is achieved by varying the input resistance of the amplifier, which can range from its smallest
value to over six times that value. As a result, if a single capacitor is used in the input high-pass filter, the 3 dB
or cutoff frequency will also change by over six times.
C
IN
RI
Rf
Input Signal
The 3-dB frequency can be calculated using equation 1.
(1)
f
–3 dB +
1
2
p CR
I
input capacitor, CI
In the typical application an input capacitor (CI) is required to allow the amplifier to bias the input signal to the
proper dc level for optimum operation. In this case, CI and the input impedance of the amplifier (ZI) form a
high-pass filter with the corner frequency determined in equation 2.
f
c(highpass) +
1
2
pZ
I
C
I
3 dB
fc
(2)
The value of CI is important to consider as it directly affects the bass (low frequency) performance of the circuit.
Consider the example where ZI is 710 k and the specification calls for a flat-bass response down to 45 Hz.
Equation 2 is reconfigured as equation 3.
C
I +
1
2
pZ
I
fc
(3)
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| TPA0202PWPR | 2.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA0202PWP | 2.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TPA0202PWPG4 | 2.2 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 |
|---|---|
| TPA02 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Operational Amplifier |
| TPA0202 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W STEREO AUDIO POWER AMPLIFIER |
| TPA0202PWP | 功能描述:音頻放大器 2W Stereo A 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 |
| TPA0202PWPG4 | 功能描述:音頻放大器 2W Stereo A 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 |
| TPA0202PWPR | 功能描述:音頻放大器 2W St Aud 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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