參數(shù)資料
型號(hào)： TPA0242PWPG4
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)： 21/35頁
文件大小： 806K
代理商： TPA0242PWPG4
www.ti.com
INPUT MUX OPERATION
ROUT+
21
R
MUX
RHPIN
RLINEIN
+
23
20
8
RIN
ROUT 16
+
SE/BTL
15
32-Step
Volume
Control
32-Step
Volume
Control
2
HP/LINE
CIRHP
0.47
F
Right
Headphone
Input Signal
CIRLINE
0.47
F
Right Line
Input Signal
CRIN
0.47
F
TPA0242
SLOS287C – NOVEMBER 1999 – REVISED SEPTEMBER 2004
Figure 39. TPA0242 Example Input MUX Circuit
The TPA0242 offers the capability for the designer to use separate headphone inputs (RHPIN, LHPIN) and line
inputs (RLINEIN, LLINEIN). The inputs can be different if the input signal is single-ended. If using a differential
input signal, the inputs must be the same because the inputs share a common RIN, LIN. Although the typical
application in Figure 31 shows the input mux control signal HP/LINE tied to SE/BTL, that configuration is not
required. The input mux can be used to select between two inputs that are used in both SE and BTL modes.
If using the TPA0242 with a single-ended input, the RIN and LIN terminals must be tied through a capacitor to
ground, as shown in Figure 39. RIN and LIN must not be tied to bypass or an offset occurs on the output causing
the device to pop when turning on and off.
Input coupling capacitors can be eliminated when using differential inputs, but are used to obtain maximum
output power. If the input capacitors are eliminated, the dc offset must match the voltage on BYPASS or the
output power is limited.
28
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA0242PWPR 功能描述:音頻放大器 St 2W 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
TPA0242PWPRG4 功能描述:音頻放大器 St 2W 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
TPA0243 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W MONO AUDIO POWER AMPLIFIER WITH HEADPHONE DRIVE
TPA0243DGQ 功能描述:音頻放大器 2W Mono 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
TPA0243DGQG4 功能描述:音頻放大器 2W Mono 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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