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參數(shù)資料
| 型號(hào)： | TPA6112A2DGQR |
| 元件分類： | 音頻放大器 |
| 英文描述： | Switchlocks |
| 中文描述： | 音頻放大器|雙|采用TSSOP | 10PIN |塑料 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大小： | 143K |
| 代理商： | TPA6112A2DGQR |
TPA6100A2
50-mW ULTRALOW VOLTAGE STEREO HEADPHONE
AUDIO POWER AMPLIFIER
SLOS269A
–
JUNE 2000
–
REVISED NOVEMBER 2000
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
Table 1. Common Load Impedances vs Low Frequency Output Characteristics in SE Mode
RL
32
CC
68
μ
F
68
μ
F
68
μ
F
Lowest Frequency
73 Hz
10,000
47,000
0.23 Hz
0.05 Hz
As Table 1 indicates, headphone response is adequate and drive into line level inputs (a home stereo for
example) is very good.
The output coupling capacitor required in single-supply SE mode also places additional constraints on the
selection of other components in the amplifier circuit. With the rules described earlier still valid, add the following
relationship:
(8)
1
C
B
55 k
1
C
I
R
I
1
R
L
C
C
using low-ESR capacitors
Low-ESR capacitors are recommended throughout this application. A real capacitor can be modeled simply as
a resistor in series with an ideal capacitor. The voltage drop across this 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.
3.3-V versus 1.6-V operation
The TPA6100A2 was designed for operation over a supply range of 1.6 V to 3.6 V. There are no special
considerations for 1.6-V versus 3.3-V operation as far as supply bypassing, gain setting, or stability. Supply
current is slightly reduced from 0.75 mA (typical) to 0.65 mA (typical). The most important consideration is that
of output power. Each amplifier can produce a maxium output voltage swing within a few hundred millivolts of
the rails with a 10-k
load. However, this voltage swing decreases as the load resistance decreases and the
r
DS(on)
as the output stage transistors becomes more significant. For example, for a 32-
load, the maximum
peak output voltage with V
DD
= 1.6 V is approximately 0.7 V with no clipping distortion. This reduced voltage
swing effectively reduces the maximum undistorted output power.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| TPA6112A2DGQRG4 | 功能描述:音頻放大器 Stereo Diff Input Stereo Headphone 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 |
| TPA6112A2EVM | 功能描述:音頻 IC 開發(fā)工具 TPA6112A2 Eval Mod 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 |
| TPA6113A2D | 功能描述:音頻放大器 40mW Stereo Audio 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 |
| TPA6113A2DG4 | 功能描述:音頻放大器 40mW Stereo Audio 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 |
| TPA6113A2DR | 功能描述:音頻放大器 40mW Stereo Audio 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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