Low-voltage stereo headphone amplifier

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1 W BTL audio amplifier with digital volume control

Overview The TDA8551; TDA8551T is a one channel 1 W Bridge-Tied Load (BTL) audio power amplifier capable of delivering 1 W output power to an 8 Ω load at THD = 10% using a 5 V power supply. The circuit contains a BTL power amplifier, a digital volume control and standby/mute logic. The TDA8551T One pin digital volume control\nVolume setting with UP/DOWN pulses\nFlexibility in use\nFew external components\nLow saturation voltage of output stage\nstandby mode controlled by CMOS compatible levels\nLow standby current\nNo switch-on/switch-off plops\nHigh supply voltage ripple rejection\nProtec;

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2 x 1.4 W BTL audio amplifiers with digital volume control and headphone sensing

Overview \nThe TDA8552T is a two channel audio power amplifier that provides an output power of 2 x 1.4 W into an 8 Ω load using a 5 V power supply. The circuit contains two BTL power amplifiers, two digital volume controls and standby/mute logic. Volume and balance of the amplifiers are controlled \n\nOne pin digital volume control (for each channel)\n\nVolume setting with up/down pulses\n\nAuto repeat function on volume setting\n\nHeadphone sensing\n\nMaximum gain set by selection pin\n\nLow sensitivity for EMC radiation\n\nInternal feedback resistors\n\nFlexibility in use\n\nFew external co;

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音频放大器和前置放大器

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