- 您现在的位置：买卖IC网 > PDF目录373709 > TS4972 (意法半导体) 1.2W AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE HIGH PDF资料下载
参数资料
| 型号： | TS4972 |
| 厂商： | 意法半导体 |
| 英文描述： | 1.2W AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE HIGH |
| 中文描述： | 为1.2W音频功率放大器，具有活性高备用模式 |
| 文件页数： | 20/28页 |
| 文件大小： | 904K |
| 代理商： | TS4972 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页当前第20页第21页第22页第23页第24页第25页第26页第27页第28页
TS4972
20/28
Fig. 82 : Flip-Chip 300μm Demoboard Top
Solder Layer
Fig. 83 : Flip-Chip 300μm
Demoboard Bottom
Solder Layer
I
BTL Configuration Principle
The TS4972 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
configuration.
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:
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 with Rin forms a high pass filter with a -3dB cut
off frequency.
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 off frequency.
)
W
(
R
)
Vout
2
(
Pout
L
2
RMS
=
Vout1 = Vin
–
Rin
Rfeed
Vout2
Vout1 = 2Vin
–
Rin
Rfeed
Gv = -------------------------------------- = 2 -------------------
Vout1
Vin
–
Rin
F
CL
=
2
π
Rin Cin
-------------1
(
)
F
CH
=
2
π
Rfeed Cfeed
----------------------1
(
)
相关PDF资料 |
PDF描述 |
|---|---|
| TS4972JT | 1.2W AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE HIGH |
| TS4973IJT | 1.2W TWO AUDIO INPUTS WITH GAIN CONTROL POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW |
| TS4973 | 1.2W TWO AUDIO INPUTS WITH GAIN CONTROL POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW |
| TS4974 | 1W Differential Audio Power Amplifier with Up/Down Digital Volume Control Pins |
| TS4974IQT | 1W Differential Audio Power Amplifier with Up/Down Digital Volume Control Pins |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TS4972_04 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1.2W Audio Power Amplifier with Standby Mode Active High |
| TS4972EIJT | 功能描述:音频放大器 1.2W audio power amp W/Standby RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TS4972EIJT1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1.2W Audio Power Amplifier with Standby Mode Active High |
| TS4972IJT | 制造商:STMicroelectronics 功能描述: |
| TS4972JT | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1.2W AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE HIGH |
发布紧急采购，3分钟左右您将得到回复。