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參數(shù)資料
| 型號： | TS4890IS |
| 元件分類： | 音頻放大器 |
| 英文描述： | AUDIO AMPLIFIER|SINGLE|BIPOLAR|TSSOP|8PIN|PLASTIC |
| 中文描述： | 音頻放大器|單|雙極| TSSOP封裝| 8引腳|塑料 |
| 文件頁數(shù)： | 24/31頁 |
| 文件大?。?/td> | 432K |
| 代理商： | TS4890IS |
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TS4890
24/31
Fig. 103 : SO8& MiniSO8 Demoboard Top
Solder Layer
Fig. 104 :
SO8 & MiniSO8 Demoboard Bottom
Solder Layer
I
BTL Configuration Principle
The TS4890 is a monolithic power amplifierwith a
BTL output type. BTL (Bridge Tied Load) means
that each end of the load are connected to two
single ended output amplifiers. Thus, we have :
Single ended output 1 = Vout1 = Vout (V)
Single ended output 2 = Vout2 = -Vout (V)
And Vout1 - Vout2= 2Vout (V)
The output power is :
For the same power supply voltage, the output
power in BTL configuration is four times higher
than
the
output
power
configuration.
in
single
ended
I
Gain In Typical Application Schematic
(cf. page 1)
In flat region (no effect of Cin), the output voltage
of the first stage is :
For the second stage : Vout2= -Vout1 (V)
The differential output voltage is
The differential gain named gain (Gv) for more
convenient usage is :
Vout
2
Vout
Gv
=
Remark : Vout2 is in phase with Vin and Vout1 is
180 phased with Vin. It means that the positive
terminal of the loudspeaker should be connected
to Vout2 and the negative to Vout1.
I
Low and high frequency response
In low frequency region, the effect of Cin starts.
Cin withRin forms a high pass filterwith a -3dB cut
off frequency .
1
F
CL
π
In high frequency region, you can limit the
bandwidth by adding a capacitor (Cfeed) in
parallel on Rfeed. Its form a low pass filter with a
-3dB cut offfrequency .
1
F
CH
π
)
W
(
R
)
Vout
2
Pout
L
2
RMS
=
)
V
(
Rin
Rfeed
Vin
1
Vout
=
)
V
(
Rin
Rfeed
Vin
2
1
Vout
2
Vout
=
Rin
Rfeed
2
Vin
1
=
(Hz)
RinCin
2
=
)
Hz
(
Cfeed
Rfeed
2
=
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TS4890IST | 功能描述:音頻放大器 1W Audio Power Amp 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS489IQT | 功能描述:音頻放大器 100mW Stereo Amp 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS489IST | 功能描述:音頻放大器 Popfree 100mW stereo headphone amp 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS4900 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE HIGH |
| TS4900ID | 功能描述:音頻放大器 300mW Audio Pwr Amp 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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