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荷兰飞利浦公司生产的TDA7497音频功率放大集成电路,属三声道结构,常用于高品质的中小功率的音响设备和高档的大屏幕彩电中,执行 R、L 声道和重低音声道 S(或中置声道 C)信号的放大输出任务。该集成电路具有以下特点:(11采用单电源供电,适用电压范围宽,为11～35V,典型供电值为29.5V。(2)输出功率较大。在供电电压为29.5V 时,输出阻抗为8Ω时,典型输出功率为:(R)10W+(L)10W+(S)10W 即30W。在温度为70℃时,总功耗约为20W。
TDA7497 Audio Power Amplifier IC produced by Philips of Netherlands is a three-channel structure commonly used in high-quality medium and small power audio equipment and high-end large-screen color TV. It performs R, L channel and subwoofer channel S (or Center channel C) signal amplification output task. The integrated circuit has the following features: (11 single-supply operation, the application of a wide voltage range of 11 ~ 35V, the typical power supply value is 29.5V. (2) the output power is larger at the supply voltage of 29.5V, the output impedance of At 8Ω, the typical output power is: (R) 10W + (L) 10W + (S) 10W or 30W. At a temperature of 70 ℃, the total power consumption is about 20W.