參數(shù)資料
型號(hào)： TDA7245
廠商： STMICROELECTRONICS
元件分類： 音頻／視頻放大
英文描述： 5 W, 1 CHANNEL, AUDIO AMPLIFIER, PDIP18
封裝： POWER, DIP-18
文件頁數(shù)： 7/11頁
文件大?。?/td> 2697K
代理商： TDA7245
APPLICATION SUGGESTIONS
The recommended values of the external components are those shown on the application circuit of fig.1.
Different values can be used. The following table can help the dsigner.
Component
Rec. Value
Purpose
Larger than Rec. Value
Smaller than Rec. Value
R1
20K
St-By Biasing
Incorrect St-By Function
Worse POP and Shorter
Delay at St-By Insertion
R2(*)
27K
Feedback
Resistors
Increase of Gain
Decrease of Gain
R3(*)
270
Decrease of Gain
Increase of Gain
R4
1
Frequency Stability
Danger of Oscillations
C1
22
F
St-By Capacitor
Longer ON/OFF Delay
Time at St-By IN/OUT
Worse POP and Shorter
Delay at St-By insertion
C2
47
F
SVR Capacitor
Worse Turn-On POP by
VS and St-By
Degradation of SVR
C3
0.1
F
Input Capacitance
Higher Low Frequency
Cut-off
C4
2.2
F
Inverting Input DC
Decoupling
Higher Low Frequency
Cut-off
C5
470
F
Supply Voltage
Danger of Oscillations
C6
0.22
F
Frequency Stability
Danger of Oscillations
C7
1000
F
Output DC Decoupling
Higher Low Frequency
Cut-off
(*) The value of closed loop gain (GV = 1 + R2/R3) must be higher than 25dB.
Figure 3: P.C. Board and Components Layout of the Circuit of fig 2 (1:1 scale)
TDA7245
5/11
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7245A 功能描述:音頻放大器 6W Audio Amplifier 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
TDA7250 功能描述:音頻 DSP 60W Dual Audio Drvr RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
TDA7253 功能描述:音頻放大器 8W Audio Amplifier 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
TDA7253L 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:6W AMPLIFIER WITH MUTING
TDA7255 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:22W FRONT REAR OR BRIDGE FULLY PROTECTED CAR RADIO AMPLIFIER
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