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參數資料
| 型號： | TPA6030A4PWPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| 封裝： | GREEN, PLASTIC, TSSOP-28 |
| 文件頁數： | 11/32頁 |
| 文件大小： | 698K |
| 代理商： | TPA6030A4PWPG4 |
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TPA6030A4
SLOS395B DECEMBER 2002 REVISED JANUARY 2005
www.ti.com
19
Large values of CC are required to pass low frequencies to the load. Consider an example where CC is 220 F, and the
load varies from 16 , 32 , 10 k, and 47 k. Table 3 summarizes the frequency response characteristics of each of the
preceding configurations.
Table 3. Load Impedances vs Low Frequency Characteristics in SE Mode
RL
()
CC
(F)
LOWEST FREQUENCY
(Hz)
16
220
45
32
220
23
10k
220
0.07
47k
220
0.015
Using Low-ESR Capacitors
Low-ESR capacitors are recommended throughout this applications section. A real (as opposed to ideal) capacitor can
be modeled simply as a resistor in series with an ideal capacitor. The voltage drop across the resistor minimizes the
beneficial effects of the capacitor in the circuit. The lower the equivalent value of this resistance, the more the real capacitor
behaves like an ideal capacitor.
Bridge-Tied Load Versus Single-Ended Mode
Figure 24 shows a Class-AB audio power amplifier (APA) in a bridge-tied-load (BTL) configuration. The TPA6030A4
amplifier consists of two Class-AB differential amplifiers driving both the positive and negative terminals of the load (per
channel). Specifically, differential drive means that as one side amplifier (the positive terminal, for example) is slewing up,
the other side is slewing down, and vice versa. This doubles the voltage swing across the load as opposed to a
ground-referenced load, or a single-ended load. Power is proportional to the square of the voltage. Plugging 2x VO(PP) into
the power equation yields 4X the output power from the same supply rail and load impedance as would have been obtained
with a ground referenced load (see equation 9).
V(RMS) +
VO(PP)
22
Power +
V(RMS) 2
RL
VCC
VO(PP)
2x VO(PP)
VO(PP)
VCC
Figure 24. Bridge-Tied-Load Configuration
(9)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA6030A4PWPR | 功能描述:音頻放大器 Wide Supply Voltage Low Power Class-AB 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 |
| TPA6030A4PWPRG4 | 功能描述:音頻放大器 Wide Supply Voltage Low Power Class-AB 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 |
| TPA6040A4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W STEREO AUDIO POWER AMPLIFIER WITH DirectPath STEREO HEADPHONE DRIVE AND REGULATOR |
| TPA6040A4EVM | 功能描述:音頻 IC 開發工具 TPA6040A4 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| TPA6040A4RHB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W STEREO AUDIO POWER AMPLIFIER WITH DirectPath STEREO HEADPHONE DRIVE AND REGULATOR |
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