- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98290 > TS4990IDT (STMICROELECTRONICS) 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 PDF資料下載
參數(shù)資料
| 型號： | TS4990IDT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | LEAD FREE, SOP-8 |
| 文件頁數(shù)： | 10/32頁 |
| 文件大?。?/td> | 714K |
| 代理商： | TS4990IDT |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
Application information
TS4990
18/32
4
Application information
4.1
BTL configuration principle
The TS4990 is a monolithic power amplifier with a BTL output type. BTL (bridge tied load)
means that each end of the load is 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 in single-ended configuration.
4.2
Gain in a typical application
The typical application schematics are shown in Figure 1 on page 4.
In the flat region (no Cin effect), the output voltage of the first stage is (in Volts):
For the second stage: Vout2 = -Vout1 (V)
The differential output voltage is (in Volts):
The differential gain named gain (Gv) for more convenience is:
Vout2 is in phase with Vin and Vout1 is phased 180° with Vin. This means that the positive
terminal of the loudspeaker should be connected to Vout2 and the negative to Vout1.
4.3
Low and high frequency response
In the low frequency region, Cin starts to have an effect. Cin forms with Rin a high-pass filter
with a -3 dB cut-off frequency. FCL is in Hz.
In the high frequency region, you can limit the bandwidth by adding a capacitor (Cfeed) in
parallel with Rfeed. It forms a low-pass filter with a -3 dB cut-off frequency. FCH is in Hz.
P
out
2V
out
RMS
()
2
R
L
------------------------------
=
V
out1
V
–
in
()
R
feed
R
in
--------------
=
V
out2
V
out1
–
2V
in
R
feed
R
in
--------------
=
G
v
V
out2
V
out1
–
V
in
----------------------------------
2
R
feed
R
in
--------------
==
F
CL
1
2
πR
inCin
------------------------
=
F
CH
1
2
πR
feedCfeed
------------------------------------
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TSDC05EIJT | 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TSDC05IJT | 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4994EIJT | 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4994EIKJT | 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4994IQT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS4990IJT | 制造商:ST 功能描述:1W AUDIO POWER AMPLIFIER WITH ACTIVE LOW STANDBY MODE |
| TS4990IQT | 功能描述:音頻放大器 1.2W audio pow. 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS4990IST | 功能描述:音頻放大器 1.2W 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS4990JT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1W AUDIO POWER AMPLIFIER WITH ACTIVE LOW STANDBY MODE |
| TS4994 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1W Differential Input/Output Audio Power Amplifier with Selectable Standby |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。