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參數資料
型號: TS4984IQT
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 1 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC16
封裝: 4 X 4 MM, 0.50 MM PITCH, LEAD FREE, TQFN-16
文件頁數: 17/29頁
文件大小: 901K
代理商: TS4984IQT
TS4984
Application Information
24/29
4.9 Application example: Differential-input BTL power stereo amplifier
The schematic in Figure 69 shows how to design the TS4984 to work in differential-input mode. For this
discussion, only the left-channel amplifier will be referred to.
Let:
R1R =R2L =R1, R2R =R2L =R2
CinR = CinL =Cin
The gain of the amplifier is:
In order to reach the optimal performance of the differential function, R1 and R2 should be matched at 1%
maximum.
Figure 69: Differential input amplifier configuration
Gvdif = 2
R2
R1
-------
×
R1L
CinL
R2L
VCC
+ Cs
+ Cb
Neg. Input LEFT
8 Ohms
LEFT Speaker
8 Ohms
RIGHT Speaker
R1R
CinR
R2R
Neg. Input RIGHT
StandBy
Control
R1L
CinL
Pos. Input LEFT
R1R
CinR
Pos. Input RIGHT
R2L
R2R
Bias
StandBy
VC
C
1
G
ND1
BypassL
G
ND2
VC
C
2
VO-L
VO+L
VO-R
VO+R
IN-L
IN+L
IN+R
IN-R
+
-
+
-
+
-
AV = -1
+
-
AV = -1
BypassR
TS4984
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相關代理商/技術參數
參數描述
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
TS4985EKIJT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins
TS4990 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1W AUDIO POWER AMPLIFIER WITH ACTIVE LOW STANDBY MODE
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