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参数资料
| 型号： | TS4984IQT |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC16 |
| 封装： | 4 X 4 MM, 0.50 MM PITCH, LEAD FREE, TQFN-16 |
| 文件页数： | 10/29页 |
| 文件大小： | 901K |
| 代理商： | TS4984IQT |
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TS4984
Application Information
18/29
4
Application Information
The TS4984 integrates two monolithic power amplifiers with a BTL (Bridge Tied Load) output type
(explained in more detail in Section 4.1). For this discussion, only the left-channel amplifier will be
referred to.
Referring to the schematic in Figure 64, we assign the following variables and values:
Vin =IN-L
Vout1 =VO-L, Vout2 =VO+R
Rin = Rin-L, Rfeed = Rfeed-L
Cfeed = Cfeed-L
4.1 BTL configuration principle
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), Vout1 -Vout2 =2Vout (V)
The output power is:
For the same power supply voltage, the output power in a BTL configuration is four times higher than the
output power in a single-ended configuration.
Figure 64: Typical application schematic - left channel
Rin = Rin-L
Cin = Cin-L
Input L
GND
Rfeed = Rfeed-L
VCC
+ Cs
1u
RL
Cfeed = Cfeed-L
AV = -1
Vin-
Vin+
Vout 1
Vout 2
+
-
+
-
V
CC1
V
CC2
VO-L
VO+L
IN-L
IN+L
=
Bias
Bypass
Standby
TS4984
+ Cb
1u
P
out
2V
outRMS
()
2
R
L
-------------------------------------
=
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相关代理商/技术参数 |
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|---|---|
| TS4985 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins |
| TS4985EIJT | 功能描述:音频放大器 2x1.2W stereo audio 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 |
| TS4985EIKJT | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins |
| TS4985EKIJT | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins |
| TS4990 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1W AUDIO POWER AMPLIFIER WITH ACTIVE LOW STANDBY MODE |
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