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參數資料
| 型號： | TS4984EKIJT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
| 封裝： | LEAD FREE, FCP-15 |
| 文件頁數： | 10/29頁 |
| 文件大小： | 1751K |
| 代理商： | TS4984EKIJT |
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Application Information
TS4984FC
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 62, 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 62. 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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相關代理商/技術參數 |
參數描述 |
|---|---|
| TS4984FC | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1.2W Stereo Audio Power Amplifier with Active Low Standby Mode |
| TS4984IQT | 功能描述:音頻放大器 2x1W stereo audio Pwr amp RoHS:否 制造商:STMicroelectronics 產品: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 |
| TS4985 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins |
| TS4985EIJT | 功能描述:音頻放大器 2x1.2W stereo audio RoHS:否 制造商:STMicroelectronics 產品: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 |
| TS4985EIKJT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins |
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