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參數資料
| 型號： | TPA2005D1GQYRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA |
| 文件頁數： | 5/29頁 |
| 文件大小： | 1192K |
| 代理商： | TPA2005D1GQYRQ1 |
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C
I2 u
1
2p 150kW 20Hz
(9)
C
I2 u
53pF
(10)
_
+
IN–
IN+
PWM
H–
Bridge
VO+
VO–
Internal
Oscillator
CS
To Battery
VDD
GND
Bias
Circuitry
RI2
Differential
Input 1
Filter-Free Class D
SHUTDOWN
RI1
Single-Ended
Input 2
CI2
Summing Two Single-Ended Input Signals
www.ti.com............................................................................................................................................. SLOS474B – AUGUST 2005 – REVISED DECEMBER 2008
If summing a ring tone and a phone signal, the phone signal should use a differential input signal while the ring
tone might be limited to a single-ended signal. If phone gain is set at gain 1 = 0.1 V/V, and the ring-tone gain is
set to gain 2 = 2 V/V, the resistor values are:
R
I1 = 3 M and RI2 = 150 k.
The high-pass corner frequency of the single-ended input is set by CI2. If the desired corner frequency is less
than 20 Hz, then:
Figure 30. Application Schematic With TPA2005D1 Summing Differential Input and
Single-Ended Input Signals
Four resistors and three capacitors are needed for summing single-ended input signals. The gain and corner
frequencies (fc1 and fc2) for each input source can be set independently (see Equation 11 through Equation 14
and Figure 31). Resistor, RP, and capacitor, CP, are needed on the IN+ terminal to match the impedance on the
IN– terminal. The single-ended inputs must be driven by low-impedance sources, even if one of the inputs is not
outputting an ac signal.
Copyright 2005–2008, Texas Instruments Incorporated
13
Product Folder Link(s): TPA2005D1-Q1
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA2005D1-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.4-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2005D1TDGNRQ1 | 功能描述:音頻放大器 1.4W Mono Fil-Free Class-D Aud Pwr Amp 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 |
| TPA2005D1ZQYR | 功能描述:音頻放大器 Mono Fully Diff Filter-Free Class-D 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 |
| TPA2005D1ZQYRG1 | 功能描述:音頻放大器 1.4W Mono Class-D Audio Amp 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 |
| TPA2006D1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.45-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER WITH 1.8-V COMPATIBLE INPUT THRESHOLDS |
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