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參數(shù)資料
| 型號： | TDF8546J/N1 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 44 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27 |
| 封裝： | PLASTIC, SOT827-1, 27 PIN |
| 文件頁數(shù)： | 3/15頁 |
| 文件大?。?/td> | 511K |
| 代理商： | TDF8546J/N1 |
TDF8546
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3 — 30 August 2011
11 of 61
NXP Semiconductors
TDF8546
I2C-bus controlled 4
45 W best efficiency amplifier
If the two channels have exactly the same signal, the current sharing between the
channels is maximum and the dissipation minimum. This can be obtained in the car by
using the front and rear channels for current sharing. In more advanced audio systems,
the correlation between the front and rear channels is not 100 % because additional
signal processing is used. Dissipation in best efficiency mode is more than when an
identical signal is used; see Figure 7. By using the patented 4-channel best efficiency
mode, where the information of all four channels is used instead of only the front or rear
information, the dissipation is reduced for uncorrelated signals.
a. Normal BTL mode
b. Best efficiency mode
(1) Same output power with less supply current.
Fig 6.
Best efficiency principle
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