參數(shù)資料
型號(hào): 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(yè)數(shù): 4/15頁(yè)
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
12 of 61
NXP Semiconductors
TDF8546
I2C-bus controlled 4
45 W best efficiency amplifier
Dissipation can be reduced by up to 65 % compared to standard BTL under normal
listening conditions; see Figure 7a. With uncorrelated front and rear signals, the reduction
in dissipation in 4 channel best efficiency mode is 8 W (35 %) compared to BTL, and 3 W
(17 %) compared to 2
2 channel best efficiency; see Figure 7b.
a. Same signal front and rear
b. Uncorrelated signal front and rear
(1) BTL mode.
(2) Best efficiency mode: 2-channel and 4-channel.
(1) BTL mode.
(2) Best efficiency mode: 2-channel.
(3) Best efficiency mode: 4-channel.
Fig 7.
Power dissipation of hypothetical quad amplifier with correlated and uncorrelated signals
one channel Po (W)
10-1
102
10
1
001aam689
20
30
10
40
50
Ptot
(W)
0
(2)
(1)
001aam690
all four channels summed Po (W)
10-1
102
10
1
10
20
30
Ptot
(W)
0
(3)
(2)
(1)
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