參數(shù)資料
型號： TPA6020A2RGWT
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 2.15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20
封裝： 5 X 5 MM, GREEN, PLASTIC, VQFN-20
文件頁數(shù)： 10/27頁
文件大?。?/td> 1948K
代理商： TPA6020A2RGWT
www.ti.com
fc +
1
2p R
L
C
(13)
V(LRMS)
VO
IDD
IDD(avg)
RL
CC
VO(PP)
VDD
-3 dB
fc
FULLY DIFFERENTIAL AMPLIFIER
TPA6020A2
SLOS458B – JULY 2005 – REVISED AUGUST 2005
output. The total voltage drop can be calculated by
subtracting the RMS value of the output voltage from
VDD. The internal voltage drop multiplied by the
For example, a 68-F capacitor with an 8-
speaker
average value of the supply current, IDD(avg), deter-
would attenuate low frequencies below 293 Hz. The
mines the internal power dissipation of the amplifier.
BTL configuration cancels the dc offsets, which elim-
An easy-to-use equation to calculate efficiency starts
inates
the
need
for
the
blocking
capacitors.
out as being equal to the ratio of power from the
Low-frequency performance is then limited only by
power supply to the power delivered to the load. To
the input network and speaker response. Cost and
accurately calculate the RMS and average values of
PCB space are also minimized by eliminating the
power in the load and in the amplifier, the current and
bulky coupling capacitor.
voltage waveform shapes must first be understood
(see Figure 33).
Figure 33. Voltage and Current Waveforms for
BTL Amplifiers
Figure 32. Single-Ended Output and Frequency
Although the voltages and currents for SE and BTL
Response
are sinusoidal in the load, currents from the supply
are different between SE and BTL configurations. In
Increasing power to the load does carry a penalty of
an
SE
application
the
current
waveform
is
a
increased internal power dissipation. The increased
half-wave rectified shape, whereas in BTL it is a
dissipation is understandable considering that the
full-wave rectified waveform. This means RMS con-
BTL configuration produces 4X the output power of
version factors are different. Keep in mind that for
the SE configuration.
most of the waveform both the push and pull transis-
tors are not on at the same time, which supports the
fact that each amplifier in the BTL device only draws
current from the supply for half the waveform. The
EFFICIENCY AND THERMAL INFORMATION
following equations are the basis for calculating
Class-AB amplifiers are inefficient, primarily because
amplifier efficiency.
of voltage drop across the output-stage transistors.
The two components of this internal voltage drop are
the headroom or dc voltage drop that varies inversely
to output power, and the sine wave nature of the
18
相關(guān)PDF資料
PDF描述
TPA6020A2RGW 2.15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC20
TPA6021A4N 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP20
TPA6021A4NE4 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP20
TPA6030A4PWPR 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28
TPA6030A4PWP 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA6020A2RGWTG4 功能描述:音頻放大器 Stereo Fully Diff Class-AB 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
TPA6021A4 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
TPA6021A4EVM 功能描述:音頻 IC 開發(fā)工具 TPA6021A4 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
TPA6021A4N 功能描述:音頻放大器 Stereo Class-AB w/Ster Hdphn Drive 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
TPA6021A4N 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC 制造商:Texas Instruments 功能描述:IC, AUDIO POWER AMP, CLASS AB, 2W, DIP20
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*