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參數(shù)資料
| 型號(hào)： | TPA2006D1DRB |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 1.45-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER WITH 1.8-V COMPATIBLE INPUT THRESHOLDS |
| 中文描述： | 1.45單聲道無濾波器D類音頻功率放大器，1.8 - V兼容輸入閾值 |
| 文件頁數(shù)： | 13/23頁 |
| 文件大小： | 750K |
| 代理商： | TPA2006D1DRB |
www.ti.com
Summing a Differential Input Signal and a Single-Ended Input Signal
Gain 1
VO
VI1
VO
VI2
2 x 150 k
RI1
V
V
(6)
Gain 2
2 x 150 k
RI2
V
V
(7)
CI2
1
2 RI2fc2
(8)
CI2
1
2 150k
20Hz
(9)
C
> 53 nF
I2
(10)
_
+
IN-
IN+
PWM
H-
Bridge
V
O+
V
O-
Internal
Oscillator
C
S
To Battery
V
DD
GND
Bias
Circuitry
R
I2
R
I2
Differential
Input 1
Filter-Free Class D
SHUTDOWN
R
I1
R
I1
Single-Ended
Input 2
C
I2
C
I2
TPA2006D1
SLOS498–SEPTEMBER 2006
Figure 25
shows how to sum a differential input signal and a single-ended input signal. Ground noise can couple
in through IN+ with this method. It is better to use differential inputs. The corner frequency of the single-ended
input is set by C
, shown in
Equation 8
. To assure that each input is balanced, the single-ended input must be
driven by a low-impedance source even if the input is not in use
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.
The high pass corner frequency of the single-ended input is set by C
I2
. If the desired corner frequency is less
than 20 Hz:
Figure 25. Application Schematic With TPA2006D1 Summing Differential Input and Single-Ended Input
Signals
13
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA2006D1DRBR | 功能描述:音頻放大器 1.45W Mono Fil-Free Class-D Audio 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 |
| TPA2006D1DRBRG4 | 功能描述:音頻放大器 1.45W Mono Fil-Free Class-D Audio 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 |
| TPA2006D1DRBT | 功能描述:音頻放大器 1.45W Mono Fil-Free Class-D Audio 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 |
| TPA2006D1DRBTG4 | 功能描述:音頻放大器 1.45W Mono Fil-Free Class-D Audio 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 |
| TPA2006D1EVM | 功能描述:音頻 IC 開發(fā)工具 AUD POWER AMP RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
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