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參數(shù)資料
| 型號： | TFA9843J |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2-channel audio amplifier (SE: 1 W to 20 W or BTL: 4 W to 40 W) |
| 中文描述： | 14 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM9 |
| 封裝： | POWER, PLASTIC, SOT-523-1, DIL-BENT-SIL, 9 PIN |
| 文件頁數(shù)： | 4/21頁 |
| 文件大?。?/td> | 142K |
| 代理商： | TFA9843J |
Philips Semiconductors
TFA9843J
2-channel audio amplifier (2 x SE or 1 x BTL)
Preliminary data
Rev. 02 — 19 January 2004
4 of 21
9397 750 12587
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
7.2 Pin description
8.
Functional description
8.1 Input configuration
The input cut-off frequency is:
(1)
Single-ended application: R
i
= 60 k
and C
i
= 220 nF:
(2)
Bridge-tied load application: R
i
= 30 k
and C
i
= 470 nF:
(3)
As shown in
Equation 2
and
Equation 3
, large capacitor values for the inputs are not
necessary; so the switch-on delay during charging of the input capacitors can be
minimized. This results in a good low frequency response and good switch-on
behavior.
8.2 Power amplifier
The power amplifier is a Bridge-Tied Load (BTL) or Single-Ended (SE) amplifier with
an all-NPN output stage, capable of delivering a peak output current of 4 A.
Using the TFA9843J as a BTL amplifier offers the following advantages:
Lower peak value of the supply current
Ripple frequency on the supply voltage is twice the signal frequency
Table 3:
Symbol
IN2+
OUT2
CIV
IN1+
GND
SVR
MODE
OUT1+
V
CC
Pin description
Pin
1
2
3
4
5
6
7
8
9
Description
input 2
inverted loudspeaker terminal 2
common input voltage decoupling
input 1
ground
half supply voltage decoupling (ripple rejection)
mode selection input (standby, mute and operating)
non inverted loudspeaker terminal 1
supply voltage
f
i cut
off
–
)
2
R
i
C
i
)
----------------------------
=
f
i cut
off
–
)
×
2
π
60
(
10
3
×
220
10
9
–
×
)
----------------------------------------------------------------
12
Hz
=
=
f
i cut
off
–
)
×
2
π
30
(
10
3
×
470
10
9
–
×
)
----------------------------------------------------------------
11
Hz
=
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TFA9843J/N1,112 | 功能描述:音頻放大器 AUDIO AMP 2CH 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 |
| TFA9879 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Mono BTL class-D audio amplifier for portable applications with digital input |
| TFA9879HN/N1 | 制造商:NXP Semiconductors 功能描述:IC AMP AUDIO MONO 3W DBS17P |
| TFA9879HN/N1,118 | 功能描述:音頻放大器 ClassD 2.75W 2Channel 1.8V 5.7mA 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 |
| TFA9879HN/N1,157 | 功能描述:音頻放大器 ClassD 2.75W 2Channel 1.8V 5.7mA 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 |
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