Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

TPA2000D2PWP Folha de dados(PDF) 11 Page - Texas Instruments

Click here to check the latest version.
Nome de Peças TPA2000D2PWP
Descrição Electrónicos  2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
Download  17 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

TPA2000D2PWP Folha de dados(HTML) 11 Page - Texas Instruments

Back Button TPA2000D2PWP Datasheet HTML 7Page - Texas Instruments TPA2000D2PWP Datasheet HTML 8Page - Texas Instruments TPA2000D2PWP Datasheet HTML 9Page - Texas Instruments TPA2000D2PWP Datasheet HTML 10Page - Texas Instruments TPA2000D2PWP Datasheet HTML 11Page - Texas Instruments TPA2000D2PWP Datasheet HTML 12Page - Texas Instruments TPA2000D2PWP Datasheet HTML 13Page - Texas Instruments TPA2000D2PWP Datasheet HTML 14Page - Texas Instruments TPA2000D2PWP Datasheet HTML 15Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 17 page
background image
TPA2000D2
2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS291B – MARCH 2000 – REVISED APRIL 2000
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
effects of applying a square wave into a speaker
Audio specialists have said for years not to apply a square wave to speakers. If the amplitude of the waveform
is high enough and the frequency of the square wave is within the bandwidth of the speaker, the square wave
could cause the voice coil to jump out of the air gap and/or scar the voice coil. A 250-kHz switching frequency,
however, is not significant because the speaker cone movement is proportional to 1/f2 for frequencies beyond
the audio band. Therefore, the amount of cone movement at the switching frequency is very small. However,
damage could occur to the speaker if the voice coil is not designed to handle the additional power. To size the
speaker for added power, the ripple current dissipated in the load needs to be calculated by subtracting the
theoretical supplied power, PSUP THEORETICAL, from the actual supply power, PSUP, at maximum output power,
POUT. The switching power dissipated in the speaker is the inverse of the measured efficiency, ηMEASURED,
minus the theoretical efficiency,
ηTHEORETICAL.
(1)
PSPKR = PSUP – PSUP THEORETICAL (at max output power)
(2)
PSPKR = PSUP / POUT – PSUP THEORETICAL / POUT (at max output power)
(3)
PSPKR = 1/ηMEASURED – 1/ηTHEORETICAL (at max output power)
The maximum efficiency of the TPA2000D2 with an 8-
Ω load is 85%. Using equation 3 with the efficiency at
maximum power from Figure 2 (78%), we see that there is an additional 106 mW dissipated in the speaker. The
added power dissipated in the speaker is not an issue as long as it is taken into account when choosing the
speaker.
when to use an output filter
Design the TPA2000D2 without the filter if the traces from amplifier to speaker are short. The TPA2000D2
passed FCC and CE radiated emissions with no shielding with speaker wires 8 inches long or less. Notebook
PCs and powered speakers where the speaker is in the same enclosure as the amplifier are good applications
for class-D without a filter.
A ferrite bead filter can often be used if the design is failing radiated emissions without a filter, and the frequency
sensitive circuit is greater than 1 MHz. This is good for circuits that just have to pass FCC and CE because FCC
and CE only test radiated emissions greater than 30 MHz. If choosing a ferrite bead, choose one with high
impedance at high frequencies, but very low impedance at low frequencies.
Use an output filter if there are low frequency (< 1 MHz) EMI sensitive circuits and/or there are long leads from
amplifier to speaker.
gain setting via GAIN0 and GAIN1 inputs
The gain of the TPA2000D2 is set by two input terminals, GAIN0 and GAIN1.
The gains listed in Table 2 are realized by changing the taps on the input resistors inside the amplifier. This
causes the input impedance, ZI, to be dependent on the gain setting. The actual gain settings are controlled
by ratios of resistors, so the actual gain distribution from part-to-part is quite good. However, the input
impedance may shift by 30% due to shifts in the actual resistance of the input resistors.
For design purposes, the input network (discussed in the next section) should be designed assuming an input
impedance of 20 k
Ω, which is the absolute minimum input impedance of the TPA2000D2. At the higher gain
settings, the input impedance could increase as high as 115 k
Ω.


Nº de peça semelhante - TPA2000D2PWP

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Texas Instruments
TPA2000D2PWP TI-TPA2000D2PWP Datasheet
608Kb / 20P
[Old version datasheet]   2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA2000D2PWPG4 TI-TPA2000D2PWPG4 Datasheet
608Kb / 20P
[Old version datasheet]   2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA2000D2PWPR TI-TPA2000D2PWPR Datasheet
608Kb / 20P
[Old version datasheet]   2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA2000D2PWPRG4 TI-TPA2000D2PWPRG4 Datasheet
608Kb / 20P
[Old version datasheet]   2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
More results

Descrição semelhante - TPA2000D2PWP

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Texas Instruments
TPA2000D2 TI-TPA2000D2_07 Datasheet
608Kb / 20P
[Old version datasheet]   2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
logo
Analog Devices
SSM2304 AD-SSM2304_15 Datasheet
935Kb / 20P
   2 W Filterless Class-D Stereo Audio Amplifier
SSM2306 AD-SSM2306 Datasheet
503Kb / 16P
   2 W, Filterless, Class-D Stereo Audio Amplifier
REV. 0
SSM2304 AD-SSM2304 Datasheet
408Kb / 19P
   2 W Filterless Class-D Stereo Audio Amplifier
Rev. PrD
SSM2306 AD-SSM2306_15 Datasheet
504Kb / 16P
   2 W, Filterless, Class-D Stereo Audio Amplifier
SSM3302 AD-SSM3302_13 Datasheet
851Kb / 20P
   2 횞10 W Filterless Class-D Stereo Audio Amplifier
logo
Texas Instruments
TPA2001D2 TI-TPA2001D2_06 Datasheet
209Kb / 14P
[Old version datasheet]   1-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA2001D2 TI-TPA2001D2 Datasheet
180Kb / 13P
[Old version datasheet]   1-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
TPA2000D1 TI-TPA2000D1 Datasheet
205Kb / 14P
[Old version datasheet]   2-W FILTERLESS MONO CLASS-D AUDIO POWER AMPLIFIER
logo
Analog Devices
SSM2380 AD-SSM2380 Datasheet
691Kb / 32P
   Filterless, Stereo, Class-D Audio Amplifier
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com