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参数资料
| 型号： | TDA7245 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 5 W, 1 CHANNEL, AUDIO AMPLIFIER, PDIP18 |
| 封装： | POWER, DIP-18 |
| 文件页数： | 7/11页 |
| 文件大小： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7245A | 功能描述:音频放大器 6W Audio Amplifier 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 |
| TDA7250 | 功能描述:音频 DSP 60W Dual Audio Drvr RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| TDA7253 | 功能描述:音频放大器 8W Audio Amplifier 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 |
| TDA7253L | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:6W AMPLIFIER WITH MUTING |
| TDA7255 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:22W FRONT REAR OR BRIDGE FULLY PROTECTED CAR RADIO AMPLIFIER |
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