參數(shù)資料
型號: TDA8933BTW
廠商: NXP SEMICONDUCTORS
元件分類: 音頻/視頻放大
英文描述: Class D Audio Amplifier
中文描述: 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO32
封裝: 6.10 MM, 0.65 MM PITCH, PLASTIC, SOT-249-1, HTSSOP-32
文件頁數(shù): 21/42頁
文件大小: 245K
代理商: TDA8933BTW
TDA8933B_1
NXP B.V. 2008. All rights reserved.
Preliminary data sheet
Rev. 01 — 23 October 2008
28 of 42
NXP Semiconductors
TDA8933B
Class D audio amplier
The pumping effect should not cause a malfunction of either the audio amplier or the
power supply, which can also be caused by triggering of the undervoltage or overvoltage
protection of the amplier.
Pumping effects in an SE conguration can be minimized by connecting audio inputs in
anti-phase and changing the polarity of one speaker as shown in Figure 11.
14.9 SE curves measured in the reference design
Fig 11. SE application for reducing pumping effect
010aaa140
IN1P
OUT1
audio
in1
IN1N
IN2N
audio
in2
IN2P
OUT2
a. VP = 25 V; RL = 2 × 8 SE
b. VP = 17 V; RL = 2 × 4 SE
(1) fi = 6 kHz
(2) fi = 1 kHz
(3) fi = 100 Hz
Fig 12. Total harmonic distortion-plus-noise as a function of output power
010aaa503
101
102
10
1
102
THD+N
(%)
103
Po (W/channel)
102
102
10
101
1
(1)
(2)
(3)
010aaa504
101
102
10
1
102
THD+N
(%)
103
Po (W/channel)
102
102
10
101
1
(1)
(3)
(2)
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