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| 型号： | TPA2005D1GQYR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
| 封装： | PLASTIC, BGA-15 |
| 文件页数： | 6/32页 |
| 文件大小： | 1128K |
| 代理商： | TPA2005D1GQYR |
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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
SLOS369F – JULY 2002 – REVISED JULY 2008............................................................................................................................................................... www.ti.com
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. 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 would be…
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.
Figure 36. 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 equations Equation 11 through
Equation 14, and Figure 37). 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.
14
Copyright 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPA2005D1
相关PDF资料 |
PDF描述 |
|---|---|
| TPA2005D1DRBR | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA2005D1ZQYRG1 | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
| TPA2005D1ZQYR | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
| TPA2005D1DGNR | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA2005D1DGN | 1.45 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPA2005D1-Q1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:1.4-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| TPA2005D1TDGNRQ1 | 功能描述:音频放大器 1.4W Mono Fil-Free Class-D Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA2005D1ZQYR | 功能描述:音频放大器 Mono Fully Diff Filter-Free Class-D RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA2005D1ZQYRG1 | 功能描述:音频放大器 1.4W Mono Class-D Audio Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA2006D1 | 制造商:TI 制造商全称: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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