AN1042D中文資料安森美半導(dǎo)體數(shù)據(jù)手冊(cè)PDF規(guī)格書
AN1042D規(guī)格書詳情
High Fidelity Switching Audio Amplifiers Using TMOS Power MOSFETs
Almost all switching amplifiers operate by generating a high frequency square wave of variable duty cycle. This square wave can be generated much more efficiently than an analog waveform. By varying the duty cycle from 0 to 100, a net dc component is created that ranges between the negative and positive supply voltages. A low pass filter delivers this dc component to the speaker. The square wave must be generated at a frequency well above the range of hearing in order to be able to cover the full audio spectrum from dc to 20 kHz. Figure 1 shows a square wave generating a sine wave of one–ninth its frequency as its duty cycle is varied.
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---|---|---|---|---|---|---|---|
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22+ |
SOP3.9 |
8000 |
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詢價(jià) | ||
PANAS |
589220 |
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詢價(jià) | ||||
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23+ |
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4500 |
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詢價(jià) | ||
A |
24+ |
b |
14 |
詢價(jià) | |||
PANAS |
24+ |
NA |
18000 |
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詢價(jià) | ||
PAN |
22+ |
DIP |
8200 |
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詢價(jià) | ||
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新 |
5 |
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詢價(jià) | |||
ST |
23+ |
ROHS |
16900 |
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ST |
22+ |
ROHS |
16900 |
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詢價(jià) | ||
PANAS |
22+ |
NA |
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詢價(jià) |