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| 型號： | ZXCD1000EQ16TA |
| 英文描述： | Consumer IC |
| 中文描述： | 消費性IC |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 1756K |
| 代理商： | ZXCD1000EQ16TA |
ISSUE 1 - MARCH 2001
ZXCD1000
8
Class D 25W Mono Open Loop (Bridge Tied
Load - BTL) Solution
– PCB description and Operation.
The top copper, the bottom copper and the silk screen
(top) are shown in Figures 5, 6 & 7 respectively, for the
double sided PCB implementation of the applications
circuit of Figure 4. A component listing is given in the
BOM (Bill of Materials) table. Gerber files for this
solution are available from Zetex Plc.
The board operates from a 16V (nom.) supply which
should be applied to the underside of the supply
decoupling capacitor C29. The audio input and speaker
connections should be made to the solder pads
indicated on Figure 7. The audio input should have a
maximum amplitude of approximately 1V pk-pk. For
diagnostic purposes, the speaker outputs can be
monitored single-endedly with respect to ground with
an oscilloscope (or other instrument) if desired.
However remember that the speaker is connected as a
Bridge Tied Load, therefore any results obtained in this
manner, are not valid for assessing performance. The
true performance depends upon some differential
cancellation across the speaker load. To view the
differential output across speakerA and speakerB, a
floating monitor must be used i.e. neither side of the
speaker should be grounded! For example, this can be
achievedwithatwochanneloscilloscopebymonitoring
thespeakerAandspeakerBoutputs,andusingtheinvert
and add functions.
The exposed pad on the underside of the ZXCD1000
eQSOP package should be soldered down to the PCB.
This in conjunction with vias and top and bottom
copper areas, functions as a heat sink.
Plots of typical performance for the solution are
shown in the included graphs. As previously stated, a
veryimportantfeatureoftheZetexsolutionisthatthe
residual distortion is almost totally free of any
crossover artifacts. This lack of crossover distortion
sets the ZXCD1000 solutions quite apart from most
other presently available low cost solutions, which in
general suffer from severe crossover distortion
problems.
Speaker Outputs
Audio Input
Figure 5.
Class D 25W Mono O.L. PCB Top Copper (Actual Size)
Figure 6.
Class D 25W Mono O.L. PCB Bottom Copper (Actual
Size)
Figure 7.
Class D 25W Mono O.L. PCB
Silk Screen (Actual Size)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZXCD1000EQ16TC | 功能描述:音頻放大器 Class D Cont IC 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 |
| ZXCD1000MOKIT | 功能描述:器件套件 ZXCD mono Kit RoHS:否 制造商:AVX 零部件類型: |
| ZXCD1000STKIT | 功能描述:器件套件 ZXCD mono Kit RoHS:否 制造商:AVX 零部件類型: |
| ZXCD100MOEVAL | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:100W CLASS D AUDIO AMPLIFIER EVALUATION BOARD |
| ZXCD1010 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:HIGH FIDELITY CLASS D AUDIO AMPLIFIER SOLUTION |
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