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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： | 6/11页 |
| 文件大小： | 2697K |
| 代理商： | TDA7245 |
ELECTRICAL CHARACTERISTCS (Continued)
STAND-BY FUNCTION
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Vst-by
Pin 5 DC Voltage
Mute SW Open (play)
6.4
V
Ist-by
Pin 5 Current
Mute SW Closed (st-by)
160
280
A
ATTst-by
Stand-by Attenuation
f = 100Hz to 10kHz
70
90
dB
Vt
Stand-by Threshold (pin 5)
3.8
V
Id st-by
Stand-by Current
VS = 14V
1
3
mA
Note (*):
MUSIC POWER CONCEPT
MUSIC POWER is ( according to the IEC clauses n.268-3 of Jan 83) the maximal power which the amplifier is capable of producing across the
rated load resistance (regardless of non linearity) 1 sec after the application of a sinusoidal input signal of frequency 1KHz.
According to this definition our method of measurement comprises the following steps:
1) Set the voltage supply at the maximum operating value -20%
2) Apply a input signal in the form of a 1KHz tone burst of 1 sec duration; the repetition period of the signal pulses is > 60 sec
3) The output voltage is measured 1 sec from the start of the pulse
4) Increase the input voltage until the output signal show a THD = 10%
5) The music power is then V
2
out
/R1, where Vout is the output voltage measured in the condition of point 4) and R1 is the rated load impedance
The target of this method is to avoid excessive dissipation in the amplifier.
Figure 2: Schematic Diagram
TDA7245
4/11
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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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