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| 型号： | TPA6203A1DGNR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.25 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封装： | GREEN, PLASTIC, SOP-8 |
| 文件页数： | 4/29页 |
| 文件大小： | 952K |
| 代理商： | TPA6203A1DGNR |
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V
(rms) +
V
O(PP)
2 2
Power +
V
(rms)
2
R
L
(4)
fc +
1
2pR
L
C
(5)
RL
2x VO(PP)
VO(PP)
–VO(PP)
VDD
RL
CC
VO(PP)
VDD
–3 dB
fc
SLOS364F – MARCH 2002 – REVISED JUNE 2008.......................................................................................................................................................... www.ti.com
low-frequency performance of the system. This
frequency-limiting effect is due to the high pass filter
network created with the speaker impedance and the
coupling
capacitance
and
is
calculated
with
For example, a 68-
F capacitor with an 8- speaker
would attenuate low frequencies below 293 Hz. The
BTL configuration cancels the dc offsets, which
eliminates the need for the blocking capacitors.
Low-frequency performance is then limited only by
the input network and speaker response. Cost and
PCB space are also minimized by eliminating the
bulky coupling capacitor.
Figure 31. Differential Output Configuration
In a typical wireless handset operating at 3.6 V,
bridging raises the power into an 8-
speaker from a
singled-ended (SE, ground reference) limit of 200
mW to 800 mW. In sound power that is a 6-dB
improvement—which is loudness that can be heard.
In addition to increased power there are frequency
response concerns. Consider the single-supply SE
configuration
shown
in
A
coupling
capacitor is required to block the dc offset voltage
Figure 32. Single-Ended Output and Frequency
from reaching the load. This capacitor can be quite
Response
large (approximately 33
F to 1000 F) so it tends to
be expensive, heavy, occupy valuable PCB area, and
Increasing power to the load does carry a penalty of
have
the
additional
drawback
of
limiting
increased internal power dissipation. The increased
dissipation is understandable considering that the
BTL configuration produces 4× the output power of
the SE configuration.
12
Copyright 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPA6203A1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPA6203A1DGNR | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC 制造商:Texas Instruments 功能描述:IC, AUDIO PWR AMP, CLASS AB 1.25W MSOP-8 |
| TPA6203A1DGNRG4 | 功能描述:音频放大器 1.25W Mono Fully Dif Class-AB 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 |
| TPA6203A1DRB | 功能描述:音频放大器 Mono Fully Diff Class-AB 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 |
| TPA6203A1DRBG4 | 功能描述:音频放大器 Mono Fully Diff Class-AB 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 |
| TPA6203A1DRBR | 功能描述:音频放大器 Mono Fully Diff Class-AB 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 |
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